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Finding the Fourth Proportional to 574,689.50, 792,298.50 and 402,375.68

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Solution

The fourth proportional to 574,689.50, 792,298.50 and 402,375.68 is: 554,737.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,689.50 : 792,298.50 = 402,375.68 : x
  2. Step 2: Convert to fraction form
    574,689.50/792,298.50 = 402,375.68/x
  3. Step 3: Cross multiply
    574,689.50x = 792,298.50 × 402,375.68
  4. Step 4: Simplify right side
    574,689.50x = 318,801,647,700.48
  5. Step 5: Solve for x
    x = 318,801,647,700.48/574,689.50
  6. Step 6: Final answer
    x = 554,737.21

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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.