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Finding the Fourth Proportional to 539,165.70, 807,151.11 and 399,550.98

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Solution

The fourth proportional to 539,165.70, 807,151.11 and 399,550.98 is: 598,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,165.70 : 807,151.11 = 399,550.98 : x
  2. Step 2: Convert to fraction form
    539,165.70/807,151.11 = 399,550.98/x
  3. Step 3: Cross multiply
    539,165.70x = 807,151.11 × 399,550.98
  4. Step 4: Simplify right side
    539,165.70x = 322,498,017,008.59
  5. Step 5: Solve for x
    x = 322,498,017,008.59/539,165.70
  6. Step 6: Final answer
    x = 598,142.68

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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.