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Finding the Fourth Proportional to 781,484,951.40, 1,078,451,355 and 429,083,767.56

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Solution

The fourth proportional to 781,484,951.40, 1,078,451,355 and 429,083,767.56 is: 592,136,764.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,484,951.40 : 1,078,451,355 = 429,083,767.56 : x
  2. Step 2: Convert to fraction form
    781,484,951.40/1,078,451,355 = 429,083,767.56/x
  3. Step 3: Cross multiply
    781,484,951.40x = 1,078,451,355 × 429,083,767.56
  4. Step 4: Simplify right side
    781,484,951.40x = 462,745,970,533,587,072
  5. Step 5: Solve for x
    x = 462,745,970,533,587,072/781,484,951.40
  6. Step 6: Final answer
    x = 592,136,764.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.