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Finding the Fourth Proportional to 629,862.55, 869,321.97 and 371,720.91

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Solution

The fourth proportional to 629,862.55, 869,321.97 and 371,720.91 is: 513,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,862.55 : 869,321.97 = 371,720.91 : x
  2. Step 2: Convert to fraction form
    629,862.55/869,321.97 = 371,720.91/x
  3. Step 3: Cross multiply
    629,862.55x = 869,321.97 × 371,720.91
  4. Step 4: Simplify right side
    629,862.55x = 323,145,157,031.35
  5. Step 5: Solve for x
    x = 323,145,157,031.35/629,862.55
  6. Step 6: Final answer
    x = 513,040.76

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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.