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Finding the Fourth Proportional to 502,375.81, 693,277.50 and 287,520.07

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Solution

The fourth proportional to 502,375.81, 693,277.50 and 287,520.07 is: 396,777.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,375.81 : 693,277.50 = 287,520.07 : x
  2. Step 2: Convert to fraction form
    502,375.81/693,277.50 = 287,520.07/x
  3. Step 3: Cross multiply
    502,375.81x = 693,277.50 × 287,520.07
  4. Step 4: Simplify right side
    502,375.81x = 199,331,195,329.43
  5. Step 5: Solve for x
    x = 199,331,195,329.43/502,375.81
  6. Step 6: Final answer
    x = 396,777.06

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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.