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Finding the Fourth Proportional to 629,937.52, 869,288.72 and 371,897.60

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Solution

The fourth proportional to 629,937.52, 869,288.72 and 371,897.60 is: 513,203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,937.52 : 869,288.72 = 371,897.60 : x
  2. Step 2: Convert to fraction form
    629,937.52/869,288.72 = 371,897.60/x
  3. Step 3: Cross multiply
    629,937.52x = 869,288.72 × 371,897.60
  4. Step 4: Simplify right side
    629,937.52x = 323,286,388,675.07
  5. Step 5: Solve for x
    x = 323,286,388,675.07/629,937.52
  6. Step 6: Final answer
    x = 513,203.89

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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.