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Finding the Fourth Proportional to 478,284,331.70, 717,426,497.55 and 260,039,227.70

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Solution

The fourth proportional to 478,284,331.70, 717,426,497.55 and 260,039,227.70 is: 390,058,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,284,331.70 : 717,426,497.55 = 260,039,227.70 : x
  2. Step 2: Convert to fraction form
    478,284,331.70/717,426,497.55 = 260,039,227.70/x
  3. Step 3: Cross multiply
    478,284,331.70x = 717,426,497.55 × 260,039,227.70
  4. Step 4: Simplify right side
    478,284,331.70x = 186,559,032,354,417,920
  5. Step 5: Solve for x
    x = 186,559,032,354,417,920/478,284,331.70
  6. Step 6: Final answer
    x = 390,058,841.55

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