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Finding the Fourth Proportional to 663,174.48, 994,053.42 and 378,251.46

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Solution

The fourth proportional to 663,174.48, 994,053.42 and 378,251.46 is: 566,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,174.48 : 994,053.42 = 378,251.46 : x
  2. Step 2: Convert to fraction form
    663,174.48/994,053.42 = 378,251.46/x
  3. Step 3: Cross multiply
    663,174.48x = 994,053.42 × 378,251.46
  4. Step 4: Simplify right side
    663,174.48x = 376,002,157,432.99
  5. Step 5: Solve for x
    x = 376,002,157,432.99/663,174.48
  6. Step 6: Final answer
    x = 566,973.20

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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.