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Finding the Fourth Proportional to 472,392,036.80, 708,588,055.20 and 288,726,027.20

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Solution

The fourth proportional to 472,392,036.80, 708,588,055.20 and 288,726,027.20 is: 433,089,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,036.80 : 708,588,055.20 = 288,726,027.20 : x
  2. Step 2: Convert to fraction form
    472,392,036.80/708,588,055.20 = 288,726,027.20/x
  3. Step 3: Cross multiply
    472,392,036.80x = 708,588,055.20 × 288,726,027.20
  4. Step 4: Simplify right side
    472,392,036.80x = 204,587,814,099,270,304
  5. Step 5: Solve for x
    x = 204,587,814,099,270,304/472,392,036.80
  6. Step 6: Final answer
    x = 433,089,040.80

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