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Finding the Fourth Proportional to 488,721.60, 732,207.60 and 418,737.60

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Solution

The fourth proportional to 488,721.60, 732,207.60 and 418,737.60 is: 627,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,721.60 : 732,207.60 = 418,737.60 : x
  2. Step 2: Convert to fraction form
    488,721.60/732,207.60 = 418,737.60/x
  3. Step 3: Cross multiply
    488,721.60x = 732,207.60 × 418,737.60
  4. Step 4: Simplify right side
    488,721.60x = 306,602,853,125.76
  5. Step 5: Solve for x
    x = 306,602,853,125.76/488,721.60
  6. Step 6: Final answer
    x = 627,356.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.