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Finding the Fourth Proportional to 539,363.20, 807,489.60 and 329,411.20

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Solution

The fourth proportional to 539,363.20, 807,489.60 and 329,411.20 is: 493,166.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,363.20 : 807,489.60 = 329,411.20 : x
  2. Step 2: Convert to fraction form
    539,363.20/807,489.60 = 329,411.20/x
  3. Step 3: Cross multiply
    539,363.20x = 807,489.60 × 329,411.20
  4. Step 4: Simplify right side
    539,363.20x = 265,996,118,123.52
  5. Step 5: Solve for x
    x = 265,996,118,123.52/539,363.20
  6. Step 6: Final answer
    x = 493,166.98

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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.