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Finding the Fourth Proportional to 498,082.60, 747,123.90 and 320,789.80

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Solution

The fourth proportional to 498,082.60, 747,123.90 and 320,789.80 is: 481,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,082.60 : 747,123.90 = 320,789.80 : x
  2. Step 2: Convert to fraction form
    498,082.60/747,123.90 = 320,789.80/x
  3. Step 3: Cross multiply
    498,082.60x = 747,123.90 × 320,789.80
  4. Step 4: Simplify right side
    498,082.60x = 239,669,726,456.22
  5. Step 5: Solve for x
    x = 239,669,726,456.22/498,082.60
  6. Step 6: Final answer
    x = 481,184.70

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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.