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Finding the Fourth Proportional to 629,868.61, 869,330.34 and 371,726.98

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Solution

The fourth proportional to 629,868.61, 869,330.34 and 371,726.98 is: 513,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,868.61 : 869,330.34 = 371,726.98 : x
  2. Step 2: Convert to fraction form
    629,868.61/869,330.34 = 371,726.98/x
  3. Step 3: Cross multiply
    629,868.61x = 869,330.34 × 371,726.98
  4. Step 4: Simplify right side
    629,868.61x = 323,153,541,910.57
  5. Step 5: Solve for x
    x = 323,153,541,910.57/629,868.61
  6. Step 6: Final answer
    x = 513,049.13

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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.