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The Golden Ratio: Phi, 1.618

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You are here: Home / Math / Pi, Phi and Fibonacci

Pi, Phi and Fibonacci

May 15, 2012 by Gary Meisner 90 Comments

Phi (Φ) and pi (Π) and Fibonacci numbers can be related in several ways:

 The Pi-Phi Product and its derivation through limits

The product of phi and pi,

1.618033988…  X  3.141592654…,  or  5.083203692,

is found in golden geometries:

Golden Circle Golden Ellipse
Circumference =
p * Φ
Area =
p * Φ

Ed Oberg and Jay A. Johnson have developed a unique expression for the pi-phi product (pΦ) as a function of the number 2 and an expression they call “The Biwabik Sum,”a function of  phi, the set of all odd numbers and the set of all Fibonacci numbers, as follows:

p Phi = 2² {1 + [ (2/3) / (F1+F2 Phi) + (1/5) / (F3+F4 Phi) – (1/7) / (F5+F6 Phi) ]
–  [ (2/9) / (F7+F8 Phi) + (1/11) / (F9+F10 Phi) – (1/13) / (F11+F12 Phi) ]
+ [ (2/15) / (F13+F14 Phi) + (1/17) / (F15+F16 Phi) – (1/19) / (F17+F18 Phi) ]
– … }
= 5.083203692….

This relationship was derived after Oberg noticed an interesting relationship between pi and phi while contemplating geometric questions related to the location of the King and Queen’s burial chambers in the Great Pyramid, Cheops, of Giza, Egypt, the design of which is based on phi.You can access the complete paper published by Ed Oberg and Jay A. Johnson, The Pi-Phi Product, in Word, or the Pi-Phi Product in Excel to see their formulation illustrated numerically.


Trigonometric functions relating phi (Φ) and pi (Π)

Divide a 360° circle into 5 sections of 72° each and you get the five points of a pentagon, whose dimensions are all based on phi relationships.

Accordingly, it shouldn’t be too surprising that phi, pi and 5 (a Fibonacci number) can be related through trigonometry:

Phi, the golden ratio, expressed in trigonometric terms

Or, a much simpler way involving, contributed by Dale Lohr:

Pi = 5 arccos (.5 Phi)

Note:  The angle of .5 Phi is 36 degrees, of which there are 10 in a circle or 5 of in pi radians.

Note:  Above formulas expressed in radians, not degrees

Alex Williams, MD, points out that you can use the Phi and Fives relationship to express pi as follows:

5arccos((((5^(0.5))*0.5)+0.5)*0.5) = pi

Robert Everest discovered that you can express Phi as a function of Pi and the numbers 1, 2, 3 and 5 of the Fibonacci series:

Phi = 1 – 2 cos ( 3 Pi / 5)


Pi and Phi in the Great Pyramid of Egypt

Another interesting relationship between Pi and Phi is related to the geometry of the Great Pyramid of Giza.  This relationship connects dimensions of the Great Pyramid to both Pi and Phi, but it is not known with certainty whether this was an intentional aspect of its design, whether its design was based on Pi or Phi but not both, or whether it is a simple coincidence. It relates to the fact that 4 divided by square root of phi is almost exactly equal to Pi:

The square root of Phi (1.6180339887…) = 1.2720196495…

4 divided by 1.2720196495… = 3.14460551103…

Pi = 3.14159265359…

The difference of these two numbers is less than a 10th of a percent.

See the Phi, Pi and the Great Pyramid page for more details.


Pi squared (Π²) and 987

Pi squared (Π²) is 9.8696…, which, if you round to 9.87 and ignore the decimals, is 987, the 17th number of the Fibonacci series. (Contributed by William Erman.)


More on the relationship of Phi squared and Pi

If you’re looking for other interesting ways to relate pi and phi, 6/5 * Phi^2 = 3.1416, which approximates pi. (Contributed by Steve Lautizar.)

Filed Under: Math

Comments

  1. j says

    September 27, 2012 at 2:14 pm

    Pi squared (Π²) and 987

    Pi squared (Π²) is 9.8696…, which, if you round to 9.87 and ignore the decimals, is 987, the 17th number of the Fibonacci series. (Contributed by William Erman.)

    yes as you also can multiply 21 * 13 and add it to 34 * 21 to make 987 which are the number 7th 8th and 9th of the Fibonacci series.

    Reply
    • Big J Little L says

      March 31, 2019 at 4:00 am

      All very fascinating. I would like to connect a few more dots for the community.

      .618x.618 ~ .382

      360×.382 ~ 137.5

      137.5 most prevelant angle of divergence in nature
      1/137.5 Fine Structure Constant
      137 years old is the most repetitious age in the bible
      137 meters Noah’s Ark

      137 is the link between science and religion

      When I have more time I will return and post more viable information.

      Namaste

      Reply
      • Tony says

        August 22, 2020 at 7:00 pm

        1 =1God, 3=God, Jesus and Holy Spirit 7=complete number in Bible.

        Reply
        • Damon S Berg says

          January 30, 2023 at 4:43 pm

          If you go back in time you’ll find that major events or resets happen in sequences of 137 years

          Reply
          • Thomas says

            October 15, 2023 at 4:05 am

            Every 138 years, the world in parts, or in a larger scale goes through a cataclysm. So what you said makes sense especially Noah’s Ark and fine structure constant. Are you an Archaix viewer? Incase you don’t know check out Archaix channel on you tube where he explains the return of the Phoenix (Phi) every 138 years the last reset being 1902 and the next one returning May 2040. You can also go back and you will see the events in history. Be careful what you read. Mr J Breshears who started Archaix has read so many ancient books and has worked out after nearly 30 years of study and writing 7 books. There is so love and wisdom in him and he stands in the truth. I highly recommend looking at his work and seeing his wondrous work.

        • richard meiners says

          October 3, 2024 at 5:07 pm

          for sure – and who is the egyptian God — Ra?

          Reply
  2. Chris Weismann says

    October 11, 2012 at 5:42 pm

    PI = 1.2 PHI^2=3.1416

    I found this relationship while studying the work of Rene Schwaller de Lubicz. He had discovered in the measurements of PI and PHI, where both numbers governed it’s PI shape. Over the course of 15 years he measured the Luxor Temple in Egypt and showed that Egypt had a sound knowledge of phi and pi long before the Greeks. Ref his colossal work Temple of Man.
    I then found this website as I wanted to delve into the relationship further.

    Reply
    • igor strucelj says

      October 19, 2016 at 5:55 am

      Chris Weismann – which book of Schwaller de Lubicz did you study and where did you get it?
      Thank you!

      Reply
    • Ben says

      June 5, 2017 at 5:08 am

      While watching a video on the Pyramids by Samuel Laboy, you can derive the equation 5Pi = 6phi^2 (The same as the equation you presented). Amazing!

      Reply
    • Rekoe Howard says

      August 28, 2017 at 6:02 pm

      These equations relate so well they appear to be Seals, of Creation I find it in the Tetrahedron Cube. This really stumped me because I can’t express in words what I truly see? Do these belong to the Creator YAHUAH 1.618 PHI
      & 3.14157 PI belong to the Son YAHUAHSHUA
      Who without Him nothing made could be made?
      I can Superimpose many many things over these ratios things like Music, Paleo Hebrew language, The Light Spectrum, Sounds & Frequencies, the Soffiegio and Perfect Circle of Sound, also most amazing the Periodic Table of Elements. Am I weird?

      Reply
      • Souhad Kahil says

        June 8, 2018 at 5:41 pm

        No contact me, I share what you vision

        Reply
        • Israel Benesha says

          June 11, 2018 at 10:11 am

          Now im interested as well. If you guys could show how ? It will be great

          Reply
      • Amanda says

        October 26, 2018 at 1:03 pm

        I have also had this vision. I would like to talk about it with anyone that has commented about recognizing the same.

        Reply
      • BeeGeeDay says

        April 1, 2019 at 3:56 am

        yes, you are connecting the keys to this matrix. any progress on this, anyone?

        Reply
      • MIKEFROMSPACE says

        November 20, 2023 at 3:41 pm

        Look at ThePaulTM on youtube who does dna geometry studies to see how the platonic solids are directly involved in dna. Phi is in dna.

        Reply
    • Terry says

      February 26, 2019 at 6:15 pm

      It is simply a mathematical trick. Pi/Phi^2 is 1.199981616… which is close to 1.2, so when you multiply by Phi^2 of course they cancel out and you get Pi.

      Reply
  3. andries says

    January 9, 2013 at 2:35 pm

    i noticed that pi x (square root phi)= 4 ( or very close) and you can make a rectangular triangle with sizes phi, (square root phi) and 1, both of a charming simplicity.

    Reply
  4. safari peter says

    May 25, 2013 at 2:37 am

    From the Giza pyramid one derives the simple relation between pi and phi that is 5/6 of pi minus 1 is phi.

    Reply
    • Gary Meisner says

      May 25, 2013 at 11:40 am

      That does provide a close approximation of phi. There are endless variations on that approach though, for instance 4 / square root of phi is close to Pi. They’re all interesting, and many are very insightful and creative, but the most meaningful relationships are those that are exact or that can be related to a geometric construction. See this site’s page on Phi, Pi and the Great Pyramid of Giza for other interesting relationships.

      Reply
      • Lucien says

        February 10, 2016 at 8:08 am

        4 (square root of Phi) = 5.088078 which is again close to Oberg and Jonson’s figure above.

        Reply
  5. Abdu says

    November 23, 2013 at 3:18 pm

    Relation of Pi to phi can be
    Pi *4/33 =0.3808 = 0.381
    1-0.381=.619 =0.618
    0.381*2= 0.764
    1-0.764= 0.236

    Reply
    • Dr. Deepa Ganesh says

      May 31, 2020 at 7:53 am

      What is 4/33?

      Reply
  6. Ian Cattell says

    November 30, 2013 at 12:53 am

    I noticed whilst writing a program to draw a ‘flower of life’ that the position of the third (and subsequent) circles, after drawing the first two intersecting circles is related by this formula (forgive me, I’m a computer geek, not a math geek) –

    Given circles of radius r at co-ords X1, Y1 and X2, Y2, the X co-ord of the center of the third circle, X3 = X1 + ( r / (Pi * Phi) ) * Pi.

    Have I restated an existing and known about relationship?
    Interesting site by the way. I’ve written a nice Pascals triangle program that shows the relationship between it and prime numbers that you might be interested in. I’ll upload it to my website if you want to have a look.

    Reply
    • Ian Cattell says

      November 30, 2013 at 2:04 am

      More easily stated ( I should have noticed earlier) X3 = X1 + R / Phi

      Reply
    • Cicada 3301 says

      June 24, 2019 at 10:59 am

      Read Liber Primus.

      Beware The False Paths.
      Good Luck

      3301

      Reply
      • Peter says

        August 2, 2022 at 6:01 pm

        Hello Cicada,

        It is good to hear from you 3301

        I have related Phi to Pi and discovered the true nature of the Eye of Horus. I have found your readings and viewed your video (1711141131131). You clearly are on a different frequency and can help me along my quantum physical journey. There is much to discuss.

        I would welcome a chance to meet if you. Please send me an email to open a dialogue.

        Reply
      • Peter says

        August 3, 2022 at 8:10 pm

        Hello Cicada.

        I have read Liber Primus and discovered the secret of the Eye of Horus. I am a young pilgrim who has seen 171114113113.

        I am interested in visiting your team in Greenland, if you’ll have me. I think I have novel ideas to lend.

        Thank you 3301

        Reply
  7. u mad ? says

    February 6, 2014 at 7:53 am

    we noticed that the circumference of the golden circle isn’t pi but phi*pi and we also discovered that the golden eclipse area is pi*phi and that it isn’t pi.

    Reply
  8. Teh Epik Duq iz comin says

    April 23, 2014 at 9:06 pm

    I am doing 6th Grade Math project on the golden ratio, thanks whoever posted this 🙂

    Reply
  9. Greg says

    May 6, 2014 at 1:38 pm

    When compared with pythagoras, the angles are 89.1, 31 and 59.9 degrees. Triangle e, phi and pi. Slightly off the 90, 60, 30.

    Why???

    Maybe calculated on a base of 11 or 9 and not a base of ten???

    Reply
    • Abe Ihmeari says

      May 23, 2021 at 6:23 am

      9/11 mirror numbers. Facebook!

      Reply
  10. Armando Hernandez says

    May 7, 2014 at 5:55 pm

    Another trigonometric functinon involving phi is:

    2*sin(pi/10) = phi = 0.618033…

    notice that pi/10 rad = 18 degrees.

    The relation above can be obtained by studying que pentagram or the pythagorean star.

    Reply
  11. j.Iuliano says

    August 2, 2014 at 11:24 am

    Here is a geometric conversion approximation for pi to phi, exact to ten decimals:

    (((4*pi^2)-(pi^3))/2)^(3^-1) = phi + sqrt(10^-13)

    This formula shows a counterintuitive result due to the idea that the side areas of a pi cubed structure (4*pi^2) is equivalent to the entire cubic pi volume plus two volume cubes of phi !!?? This equation shows the structure of an elliptic curve:

    ((phi^3)/(pi^3))-(2/pi)+(1/2) = .00000008013

    In the elliptic curve equation, (x^3)+(y^3) = 4*x*y, the xy point, parallel to the x axis tangent point of the elliptic cusp curve generated by the latter equation is, x=1.67894731 , y=2.1165347, can be substituted for x:phi and y:pi, respectively.The interesting thing about surface areas being greater than the sum of cubic volumes is this effect happens to black holes, where 1/4 of the surface area of a black hole contains more information than the entire volume of the black hole!?

    Reply
    • George Lambert says

      February 3, 2015 at 12:32 pm

      Where did you come up with this reference – or did you devise it yourself.

      It is very interesting, The only similar reference I can find on the internet to it
      is in this pdf.

      https://cims.nyu.edu/~kiryl/Calculus/Section_2.6–Implicit_Differentiation/Implicit_Differentiation.pdf

      I link to the reference is posted here in this image.

      https://cloudup.com/cjtHpKgbvWx

      Reply
    • Derek Skhane says

      November 27, 2016 at 11:21 am

      Pleasing to “see” you again J.Juliano

      A few approximations with regard to Phi and Pi are as follows:
      Whilst the Great Pyramid of Giza dimensions are: 756 base side length and a height of 480 the volume will be: 480 x 756 x 756 ÷ 3 = 91445760. The base perimeter will be: 756 x 4 = 3024, the square root of the volume of 91445760 = 9562.727644349… this divided by 3024 = 3.162277660168379… this is the √2 x √5

      Hence the Great Pyramid as a “cube” is: 480 x 756 x 756 = 274337280 the square root of this is 16563.1301389… this divided by 3024 = 5.4772255750516… this is the √2 x √5 x √3, in view of the fact that the 16563.1301389…÷ 9562.727644349…= 1.732050807568… which is √3
      Into a good quality calculator 1836 afterwards click Cos to obtain: 0.8090169943749…this multiplied by 2 = Phi

      Likewise the Great Pyramid 756 Cos. x 2 = 1.61803398874989…this is Phi
      Likewise the Great Pyramid 480 Sine: x 2 = 1.732050807568877…this is √3

      The Canonical Earth mean circumference is: 131383296, feet The Maya super number: 1366560 is 5256 {Maya Tzolkins} multiplied by 26
      The 131383296 reduced to 131.383296 plus 0.78 then divided by 26 = 5.083203692307 although we observe a cyclic 692307 we discover that: Phi x Pi = 5.08320369231…

      Consequently 5.083203692307 is Phi x 3.14159265358…which is Pi correct to 11 decimal places
      Therefore 5.083203692307 is Pi x 1.61803398874…which is Phi correct to 11 decimal places

      Peace
      Derek

      Reply
      • The dude says

        December 21, 2022 at 10:17 am

        Is it possible that ancient mathematicians knew something we don”t? I’m just in 8th grade trying to understand all of this.

        Reply
  12. j.Iuliano says

    August 2, 2014 at 11:27 am

    addendum: y in the elliptic curve is actually rewritten to the fraction 8/3=2.6666…

    Reply
  13. PANAGIOTIS STEFANIDES says

    September 17, 2014 at 4:32 am

    PLEASE REF. links found in Web Side http://www.stefanides.gr:

    http://www.stefanides.gr/Html/QuadCirc.htm

    http://www.stefanides.gr/Html/piquad.htm

    http://www.stefanides.gr/pdf/GOLDEN_ROOT_SYMMETRIES_OF_GEOMETRIC_FORMS_by_Panagiotis_Stefanides.pdf

    Reply
  14. Flemming Sejer says

    October 14, 2014 at 8:05 pm

    In the section “Trigonometric functions …”, I find the first note incorrect. It should read: “Note: The angle of Pi/5 is 36 degrees, of which there are 10 in a circle or 5 in Pi radians.” and not “Note: The angle of .5 Phi is 36 degrees, …”

    Reply
    • Jeff Anderson says

      January 26, 2019 at 11:37 pm

      Saying π/5 = 36 degrees says little, knowing that 2π is 360.

      I think it points to:

      cos 36 = φ/2

      This means that the ONLY reason we can divide a circle into even 5ths is because of φ. Or at least, if you divided a circle into perfect 5ths, then you must have used φ, even if you didn’t realise.

      Reply
      • Willy says

        May 21, 2023 at 3:03 pm

        Jeff, I’d say that this is the best and most fitting relationship of pi and phi I read here! Thank you for sharing, now, I feel enlightened! No vague lalala – thank you

        Reply
  15. Luke Williams says

    May 11, 2015 at 3:10 am

    I noticed that a
    near perfect 7 sided figure, a heptagon with an angle of
    can be constructed from any arm of the
    5 pointed star.

    http://i761.photobucket.com/albums/xx255/paldenium/image.jpg1_12.jpg

    which seems to reflect the
    phi=7/5 (Pi/e)

    similarly
    http://i761.photobucket.com/albums/xx255/paldenium/image.jpg1_14.jpg
    the base cuts the points at 1:phi

    1.618018

    Thanks to Marcus the Maronite and Hirano

    Reply
  16. Myrtonos says

    May 18, 2015 at 5:01 am

    The area of the golden ellipse is simply the pi-phi product multiplied by the square of the semi-minor axis. The convergent of this product with 22 continued fraction values is [5; 12, 53, 2, 14, 1, 1, 4, 2, 5, 11, 3, 11, 3, 1, 4, 4, 17, 1, 45, 5, 2].

    Reply
  17. Jorge Xerxes says

    July 20, 2015 at 5:09 pm

    I observed that Pi/2 = atan(1/sqrt(phi)) + atan(sqrt(phi)).

    Read about it in…

    https://jorgexerxes.wordpress.com/2015/07/16/algumas-relacoes-matematicas-entre-a-constante-pi-a-razao-aurea-e-a-construcao-de-piramides/

    Reply
    • Gary Meisner says

      July 20, 2015 at 9:27 pm

      That is true, as it is derived from the triangle shown in the article with sides of the sqrt of Phi and 1, with a hypotenuse of Phi

      1/sqrt(phi) = 0.786151377757423
      sqrt(phi) = 1.272019649514070

      atan(1/sqrt(phi)) = 0.666239432492515
      atan(sqrt(phi)) = 0.904556894302381
      Total = 1.570796326794900

      Pi = 3.141592653589790
      Pi/2 = 1.570796326794900

      Pi and Phi can be also related through trigonometry through angles involving the pentagon that divides a circle in five sections.

      Beware though of articles that tell you that Pi * Sqrt (Phi) = 4. That is not true.

      Reply
      • Khalfan says

        October 20, 2015 at 10:54 pm

        And that is precisely what PANAGIOTIS STEFANIDES

        (https://www.goldennumber.net/pi-phi-fibonacci/#comment-1759)

        is trying to claim for fame and he has gone to extensive lengths to prove the clever paradox that π = 4/√φ based on kepler triangles and that this erroneous
        value of π is the correct one, Along the lines he makes the extraordinary claim that some aliens in fact notified mankind about it.

        Read a little about it here but don’t laugh please
        :
        http://www.veteranstoday.com/2015/10/06/pi2/

        Reply
        • Jorge Xerxes says

          December 1, 2015 at 4:51 pm

          Hi Gary and Khalfan,

          Thanks for replying and for your reading suggestions!

          I developed a little bit more and prepared two another posts.

          Note that, despite of some Math and Physics, the main purposes are Art and Aesthetics.

          https://jorgexerxes.wordpress.com/2015/11/12/orbit-study/

          https://jorgexerxes.wordpress.com/2015/11/24/cosmological-study/

          Best Wishes!

          Reply
    • Mateusz Górka says

      April 20, 2024 at 2:44 pm

      for x > 0: arctan(x)+arctan(1/x) is always equal to pi/2
      It doesn’t need to be phi, unfortunately

      Reply
  18. Dominic says

    January 5, 2016 at 1:43 am

    The angle of 0,5 x 1.618 x (57.3 deg/rad) = 46.36 degrees not 36 degrees.

    If we multiply Phi by 2/5 or 0.4, we get:
    0.4 x 1.618 x (57.3 deg/rad) = 37.08 deg, which is not 36, but certainly closer.

    There is no reason why 360 should be related to Pi or Phi, since it was only picked because it was divisible by so many factors (2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, and 90).

    If we search for inter-relationships of 360 with e, Pi, or Phi, we’ll find some but they will be only coincidental, with no native meaning.

    Reply
    • Marsal says

      March 22, 2016 at 3:08 pm

      Hi

      cos (pi/5) = phi/2

      Reply
    • Brian says

      February 8, 2024 at 3:42 pm

      360 was the original number of days in a year, before an ancient cataclysm, as the calendars of many civilizations show. So 360 divisions of a circle made sense.

      Reply
  19. Marsal says

    March 22, 2016 at 4:39 pm

    “There is no reason why 360 should be related to Pi or Phi”

    cos (pi/5) = phi/2

    Reply
    • Gary B Meisner says

      March 22, 2016 at 9:31 pm

      And yet it is. The relationship is related to the geometry of triangles which divide a circle into 5 parts. The pentagon is based on this geometry, and all its segments are in golden ratio proportion to the others. See more at https://www.goldennumber.net/geometry/.

      Reply
      • mason says

        June 2, 2016 at 10:48 am

        no, it’s not. 360 is a completely arbitrary number. “5” is the number related to Φ… dividing a whole into 5 parts creates Φ ratios. If we as humans had decided that circles have 500 degrees, then the number 100 would be significant. Also, to whomever posted the relationship between pi^2 and 987, this is not significant. Yes, 987 is the 17th number of the fibonacci sequence. Yes ignoring decimal places in base(10), pi^2 is ~ 987. But 100 is an arbitrary number in any other base. I could argue that written in base(12), this no longer matters or holds true.

        But in base 12, Φ can not be written as a function of “fives.”

        The relationship cos(pi/5)= Φ/2 makes relative sense. Φ is related to the functions 2x and 0.5x (and other binary operations using these functions as parameters). pi/5 in radians represents 1/5 of a semicircle circle, and as such, it makes sense that the cosine of 1/10 a circle is equal to half of Φ. Again, this is not a true relationship between Φ and pi because 2pi is an arbitrarily chosen number which represents the whole of a circle, just like 360 degrees.

        Reply
        • Marsal says

          May 30, 2017 at 11:49 am

          Can you explain what you mean by “true relationship” with some exemples ?

          Reply
        • Alex says

          June 13, 2020 at 6:30 pm

          If you think 360 degrees in a circle is arbitrarily chosen then I’m afraid you’re missing out on some very interesting information

          Reply
          • Fernand MARSAL says

            June 14, 2020 at 2:13 am

            I think 360 degrees in a circle is arbitrarily chosen but it is a judicious choice . 400 grades was another choice less judicious .

  20. Gerhard Daniel Kadisch says

    October 21, 2016 at 3:22 am

    Hello,
    please find enclosed a small treatise concerning squaring the circle.

    http://www.gurt-der-wahrheit.org/files/quadratur_des_kreises.pdf

    .. Although only in German, but the pictures say more than 1000 words … 🙂

    Kind regards,

    Gerhard Dnaiel Kadisch
    http://www.gurt-der-wahrheit.org

    Reply
  21. Joe says

    May 18, 2017 at 4:25 am

    I’m tired of these approximations… 3.1446 is NOT pi.. so stop posting this nonsense unless you have some real valid equations

    Reply
    • Matt says

      July 2, 2018 at 12:55 am

      Approximations is all there is because math does not depict reality and its foolish to think it does.

      According to google,; earth’s circumfrence = 24901
      Earths radius = 3959

      Solve for pi… you get 3.1448

      So, this concept of 3.14159265… going on forever is stupid… plus the proof of this number involves infinity so it can not be correct

      If anything it is 3.1416, and thats it… but this only works mathematically, yet practically for true values and distance the first figure is much more accurate

      Reply
    • Ekl1p5e says

      October 11, 2020 at 12:25 pm

      Right on! Saying that something IS the same thing as something similar is as irrational as pi itself

      Reply
  22. Jesus S says

    May 29, 2017 at 4:23 pm

    Over the floor is an Isosceles triangle with two equal heights and minimum perimeter: That gives two equal angles 51.8272923729º in the base whose cosine is 0.6180339887=Phi–1 proportions that we can find in the Great Pyramid of Giza transversal section. Angles formula in radians: COS(A)+COS(1)=COS(B)+COS(C)

    Obtain it with TrianCal: http://triancal.esy.es/?lang=en&y=314.460551103&z=314.460551103&p=1047.2135955

    Reply
  23. Jorge Xerxes says

    August 22, 2017 at 11:38 am

    Dear Sirs,

    Could You, please, evaluate this Idea?

    https://jorgexerxes.wordpress.com/2017/08/22/how-to-nullify-gravity/

    Thanks In Advance!! Jorge Xerxes

    Reply
  24. Aqueel Ahmed Vallanchira says

    August 28, 2017 at 11:05 am

    Phi^2=phi+1
    Phi^3=2phi+1
    Phi^4=3phi+2
    Phi^5=5phi+3
    Phi^6=8phi+5
    ….etc….

    Here we can notice the Fibonacci sequence

    Reply
  25. Machænema says

    September 23, 2017 at 10:15 am

    Place phi into the “mandelbrot” set.

    Reply
  26. Gerhard Daniel Kadisch says

    October 23, 2017 at 7:08 am

    See in the drawing two structures of Pi () over Sin; Tan; Phi-1 and Fibonacci divisions.

    Kind regards, Gerhard Daniel Kadisch.

    here as PDF
    http://www.gurt-der-wahrheit.org/files/Pi()%20durch%20Sin%20Tan%20und%20Fibonacci.pdf

    and here the DWG-File:
    http://www.gurt-der-wahrheit.org/files/Pi()%20durch%20sin%20Tan%2036%c2%b0%20und%20Fibonacci-2.dwg

    Reply
  27. David Martin says

    November 14, 2017 at 11:14 pm

    This topic is very interesting. My background is engineering, not mathematics. Yet the combined representation of the relationships among pi, phi, and the fibonnaci series through fornula, geometric and numerical methods are both understandable and elegant. I believe this is novel and significant and presents fundamental insights that could lead to a new unifying paradigm relating mathematics and our world view.

    Reply
  28. Om says

    June 12, 2018 at 6:55 am

    Real value of π = 3.1446055110296….. = 4/√ϕ
    This can be expressed as
    π⁴ + 16π² =16²

    Reply
    • Gary B Meisner says

      June 14, 2018 at 8:15 am

      This debate over the real value of pi is very interesting. I’ve seen a variety of proofs presented, but no one has really explained why the many methods that can be used to calculate the commonly accepted value of pi are wrong. That needs to be addressed with great detail and clarity in order for this claim to be accepted. I’m willing to post them on this site if they’re good.

      Reply
  29. G. W. Barbosa says

    December 7, 2018 at 10:22 am

    A close relationship between π and φ, in case no one has noticed it yet, is

    φ^39 ~ π^17/2

    An even closer relationship is

    φ ~ (π/2*(π^16 + 19√2))^(1/39) = 1.6180339887500868…

    ( φ = 1.6180339887498948… )

    Reply
    • Gary B Meisner says

      December 29, 2018 at 5:17 am

      But when it’s just an approximation and not exact we have to ask the question if it’s truly a relationship. With more numbers and complicated formulas we can achieve more significant digits of accuracy, but that can be done with any set of two numbers. How does that demonstrate “relationship” versus just creative expression of mathematics?

      Reply
      • G. W. Barbosa says

        December 31, 2018 at 10:37 am

        Not a good choice of words, I admit. Near-identity might have been better. That’s what those are, just approximations due to fortuitous coincidences. You are right: “relationship”, close or not, would imply a mathematical connection between both constants. Clearly not the case here.

        Reply
  30. Jeff Anderson says

    January 27, 2019 at 12:18 am

    φ = e^(iπ/5) + e^(-iπ/5)

    Says: Phi is the displacement between one 10th of a clockwise and counter clockwise rotation along the unit circle.

    or.. Phi is a chord 1/5th along the unit circle.

    Reply
  31. Robin Bogg says

    February 6, 2019 at 7:50 am

    HI friends, i am not “Educated” as some if you but i found these numbers ,
    While playing around for fun with some Calculations/Sequences I found these Decimals/Fractals ?(:

    Phi= 1.61803398
    Pi= 3.141 Pi x Phi =
    5,082399953118 and when searched on Google it got 0 results? The Result is aligned with Fibonacci seq/numbers?

    i found E to work better in this way. e= 2,71828182 or 2,71828182845904

    Phi = 1.61803398
    Pi = 3.141592653
    E = 2,718281821

    Reply
  32. Terry says

    February 26, 2019 at 6:30 pm

    Phi^2 = 3Gc/pi x a, where G is the gravitational constant, c = speed of light, and a = fine structure constant. This expression is also equivalent to 6a^2 x h/pi x e^2, where h = Planck constant, and e = elementary charge (electron or proton).

    You can see more on my paper at vixra.org/abs/1803.0290

    Reply
  33. jude-andre charles says

    March 23, 2019 at 4:50 pm

    you all need to see this: http://measuringpisquaringphi.com/

    Reply
  34. A. M. Bogosian says

    April 19, 2019 at 11:31 pm

    https://www.youtube.com/watch?v=2fS9ixfQ_no

    Check this out, especially the ending.

    Reply
  35. Brad Busch says

    May 1, 2019 at 2:09 am

    Pi must be the ratio of the radius of the smallest thing to its circumference: at the speed of light all things must be massless dots without any discernible properties. Which means that as one would decelerate there would be a relative region where the characteristics of an object were blurred before the ratio of pi were visible.

    Wavelength, divided by the Planck length, L/ℓ P=pi*phi

    Math is fun

    Reply
  36. Dr. Chetansing Rajput says

    December 14, 2019 at 12:17 am

    Sir,
    I have recently published a paper that reveals THE EXTREMELY PRECISE Pi:Phi CORRELATION, which is firmly premised upon Classical geometric principles.

    Video Link: https://youtu.be/P1Ddz55JFlc

    Paper Link: https://rajpub.com/index.php/jam/article/view/8498

    Reply
  37. Dr. Chetansing Rajput says

    February 27, 2020 at 6:46 am

    Extremely precise Pi:Phi Correlation
    https://rajpub.com/index.php/jam/article/view/8498

    Reply
  38. Jude says

    August 3, 2020 at 10:02 am

    If you do 6/5*Phi^2 you get 3.1416407865 as established above.

    6/5 ⋅ 2.61803398875 = 3.1416407865

    But… If you do 3.1416407865 and divide it by 432 (Hz.???), you get a fairly close approximation of the fine structure constant α = 0.007297352566.

    3.1416407865 / 432 = 0.007272316635

    If you multiply that 0.007272 (the true result) by 360, you get back to Phi^2.

    0.007272316635 × 360 = 2.61803398875

    If you do twice the square root of Phi^2, we get 1.27202.

    √(√2.61803398875) = 1.272019649514

    If a square is related to the base of a Kepler’s right triangle, which is the model for half of one face of the Pyramid of Giza, then the height of that triangle HAS to be 1.27202 times greater in order to uncover the true Pi.

    Equation for Kepler’s Right Triangle is exactly the same as Pythagoras’ Theorem where the base is one and the height is 1.27202:

    √(1² + 1.27202²) = 1.618034 (Phi is the Hypotenuse).

    In other words, 4/1.27202 = 3.14460551103 is the true Pi. Here’s how and why:

    When taking the square area of 4 and divide it by 3.14460551103, then square the result to thereafter subtract 3.14460551103 from the result, the answer gives you a perfect 16. If you are confused, here’s a better way to compare it:

    With traditional Pi – >

    ((4² / π)² − π²) = 16.068619

    With True Pi – >

    ((4² / (4 / 1.27202))² − (4 / 1.27202)²) = 16

    So there is an absolute relation between the following numbers: Reduced Pi (3.1416407865), Increased Pi (3.14460551103), Phi (1.61803398875), 4 (square), 5 (Pentagon), 6 (Hexagon), 432 (Hz), 360 (degrees) as demonstrated here:

    (√(1/(√(((6/5 ⋅ ((1 + √5) / 2)²) / 432) × 360))) × 4) = 3.14460551103

    Reply
  39. john shanahan says

    June 21, 2021 at 6:07 am

    Hi Gary, on the ninth of this month June 2021 I came up with two approximations for the A.U. values of Venus and Mars such that there is a connection between Phi and Pi. Venus is then .723305077 and Mars 1.523719184 Then give mars the music interval 1.875 as a power and devide it by the 1.875 root of Venus which equals Phi squared and then Mars to the power I.875 times Venus to the power 1.875 times Phi squared equals Pi. N.A.S.A gives the values as .72332102 for Venus and 1.52371243. All the best John Shanahan.

    Reply
    • john shanahan says

      July 8, 2021 at 10:45 am

      If one puts the following into google the A.U values for mars and venus are to be found at the bottom of the page. JPL Orbital Elements 3000 BC to 3000 AD

      Reply
  40. john shanahan says

    June 27, 2021 at 10:26 am

    Thanks a million Gary!

    Reply
  41. Derek says

    June 28, 2021 at 9:12 am

    A previous post of mine:{today is 28/06/2021

    Derek Skhane says

    November 27, 2016 at 11:21 am

    Pleasing to “see” you again J.Juliano

    A few approximations with regard to Phi and Pi are as follows:
    Whilst the Great Pyramid of Giza dimensions are: 756 base side length and a height of 480 the volume will be: 480 x 756 x 756 ÷ 3 = 91445760. The base perimeter will be: 756 x 4 = 3024, the square root of the volume of 91445760 = 9562.727644349… this divided by 3024 = 3.162277660168379… this is the √2 x √5

    Hence the Great Pyramid as a “cube” is: 480 x 756 x 756 = 274337280 the square root of this is 16563.1301389… this divided by 3024 = 5.4772255750516… this is the √2 x √5 x √3, in view of the fact that the 16563.1301389…÷ 9562.727644349…= 1.732050807568… which is √3
    Into a good quality calculator 1836 afterwards click Cos to obtain: 0.8090169943749…this multiplied by 2 = Phi

    Likewise the Great Pyramid 756 Cos. x 2 = 1.61803398874989…this is Phi
    Likewise the Great Pyramid 480 Sine: x 2 = 1.732050807568877…this is √3

    The Canonical Earth mean circumference is: 131383296, feet The Maya super number: 1366560 is 5256 {Maya Tzolkins} multiplied by 26
    The 131383296 reduced to 131.383296 plus 0.78 then divided by 26 = 5.083203692307 although we observe a cyclic 692307 we discover that: Phi x Pi = 5.08320369231…

    Consequently 5.083203692307 is Phi x 3.14159265358…which is Pi correct to 11 decimal places
    Therefore 5.083203692307 is Pi x 1.61803398874…which is Phi correct to 11 decimal places

    Peace
    Derek
    Reply

    Reply
    • J.Iuliano says

      December 26, 2022 at 9:10 pm

      (e^(4/3))/(EM^6)/64/((pi/3)^3)…the reciprocal log e of this equation =1/3.
      Where e=2.718281828.
      .EM=.577215665….

      Reply
  42. Dr. Chetansing Rajput says

    May 8, 2022 at 12:47 pm

    Golden Ratio, Metallic Means and Pythagorean Triples
    https://youtu.be/LFW1saNOp20

    Reply
  43. Tony Colacchio says

    August 6, 2023 at 10:34 am

    The orbital period of Venus, the planet associated with beauty is ~224.65 days.

    The orbital period of the Earth is ~365.2425 days (according to the Gregorian calendar).

    224.65 / 365.2425 = 0.615070809 Pretty close to Phi’s 618.

    Keep in mind that orbital periods are approximations.

    Reply
  44. Brad Busch says

    October 6, 2024 at 3:42 am

    f_n=∞

    Փ-1•1/Փ=(8/15*π^2+f_n-1)/f_n

    but_R_but_2=[1+(1+1)]/2

    Փ-1•1/Փ=[[π-1/2-(Փ-1)-(Ε-1-1/2)]x2-1 + [[π-1/2-[[π-1/2-(Փ-1)-(Ε-1-1/2)]x2-1]-(Ε-1-1/2)]x2-1]]/2

    1+2=3 _______________________ + _____________________________________________

    Site messed, I mean mapped(?)

    Reply
  45. Derek says

    October 8, 2024 at 2:54 am

    132.163296 is 26 x 5.083203692307…
    Whereas Pi x Phi = 5.08320369231..

    Reply

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