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Finding the Fourth Proportional to 538,131.80, 807,198.72 and 505,248.89

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Solution

The fourth proportional to 538,131.80, 807,198.72 and 505,248.89 is: 757,874.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,131.80 : 807,198.72 = 505,248.89 : x
  2. Step 2: Convert to fraction form
    538,131.80/807,198.72 = 505,248.89/x
  3. Step 3: Cross multiply
    538,131.80x = 807,198.72 × 505,248.89
  4. Step 4: Simplify right side
    538,131.80x = 407,836,253,253.43
  5. Step 5: Solve for x
    x = 407,836,253,253.43/538,131.80
  6. Step 6: Final answer
    x = 757,874.29

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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.