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Finding the Fourth Proportional to 502,893.20, 754,339.80 and 437,939.30

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Solution

The fourth proportional to 502,893.20, 754,339.80 and 437,939.30 is: 656,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,893.20 : 754,339.80 = 437,939.30 : x
  2. Step 2: Convert to fraction form
    502,893.20/754,339.80 = 437,939.30/x
  3. Step 3: Cross multiply
    502,893.20x = 754,339.80 × 437,939.30
  4. Step 4: Simplify right side
    502,893.20x = 330,355,043,974.14
  5. Step 5: Solve for x
    x = 330,355,043,974.14/502,893.20
  6. Step 6: Final answer
    x = 656,908.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.