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Finding the Fourth Proportional to 472,565,406.80, 708,848,110.20 and 408,864,414.80

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Solution

The fourth proportional to 472,565,406.80, 708,848,110.20 and 408,864,414.80 is: 613,296,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,565,406.80 : 708,848,110.20 = 408,864,414.80 : x
  2. Step 2: Convert to fraction form
    472,565,406.80/708,848,110.20 = 408,864,414.80/x
  3. Step 3: Cross multiply
    472,565,406.80x = 708,848,110.20 × 408,864,414.80
  4. Step 4: Simplify right side
    472,565,406.80x = 289,822,767,759,008,960
  5. Step 5: Solve for x
    x = 289,822,767,759,008,960/472,565,406.80
  6. Step 6: Final answer
    x = 613,296,622.20

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