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Finding the Fourth Proportional to 539,117.20, 807,250.20 and 432,002.80

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Solution

The fourth proportional to 539,117.20, 807,250.20 and 432,002.80 is: 646,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,117.20 : 807,250.20 = 432,002.80 : x
  2. Step 2: Convert to fraction form
    539,117.20/807,250.20 = 432,002.80/x
  3. Step 3: Cross multiply
    539,117.20x = 807,250.20 × 432,002.80
  4. Step 4: Simplify right side
    539,117.20x = 348,734,346,700.56
  5. Step 5: Solve for x
    x = 348,734,346,700.56/539,117.20
  6. Step 6: Final answer
    x = 646,861.85

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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.