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Finding the Fourth Proportional to 644,425.92, 966,372.80 and 279,710.87

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Solution

The fourth proportional to 644,425.92, 966,372.80 and 279,710.87 is: 419,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,425.92 : 966,372.80 = 279,710.87 : x
  2. Step 2: Convert to fraction form
    644,425.92/966,372.80 = 279,710.87/x
  3. Step 3: Cross multiply
    644,425.92x = 966,372.80 × 279,710.87
  4. Step 4: Simplify right side
    644,425.92x = 270,304,970,401.92
  5. Step 5: Solve for x
    x = 270,304,970,401.92/644,425.92
  6. Step 6: Final answer
    x = 419,450.80

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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.