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Finding the Fourth Proportional to 629,836.56, 868,912.72 and 371,610.96

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Solution

The fourth proportional to 629,836.56, 868,912.72 and 371,610.96 is: 512,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,836.56 : 868,912.72 = 371,610.96 : x
  2. Step 2: Convert to fraction form
    629,836.56/868,912.72 = 371,610.96/x
  3. Step 3: Cross multiply
    629,836.56x = 868,912.72 × 371,610.96
  4. Step 4: Simplify right side
    629,836.56x = 322,897,490,035.41
  5. Step 5: Solve for x
    x = 322,897,490,035.41/629,836.56
  6. Step 6: Final answer
    x = 512,668.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.