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Finding the Fourth Proportional to 629,753.32, 869,042.28 and 343,279

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Solution

The fourth proportional to 629,753.32, 869,042.28 and 343,279 is: 473,715.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,753.32 : 869,042.28 = 343,279 : x
  2. Step 2: Convert to fraction form
    629,753.32/869,042.28 = 343,279/x
  3. Step 3: Cross multiply
    629,753.32x = 869,042.28 × 343,279
  4. Step 4: Simplify right side
    629,753.32x = 298,323,964,836.12
  5. Step 5: Solve for x
    x = 298,323,964,836.12/629,753.32
  6. Step 6: Final answer
    x = 473,715.59

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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.