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Finding the Fourth Proportional to 636,700.50, 878,432.24 and 432,397.04

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Solution

The fourth proportional to 636,700.50, 878,432.24 and 432,397.04 is: 596,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,700.50 : 878,432.24 = 432,397.04 : x
  2. Step 2: Convert to fraction form
    636,700.50/878,432.24 = 432,397.04/x
  3. Step 3: Cross multiply
    636,700.50x = 878,432.24 × 432,397.04
  4. Step 4: Simplify right side
    636,700.50x = 379,831,497,105.40
  5. Step 5: Solve for x
    x = 379,831,497,105.40/636,700.50
  6. Step 6: Final answer
    x = 596,562.27

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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.