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Finding the Fourth Proportional to 625,447.98, 937,421.10 and 288,025.47

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Solution

The fourth proportional to 625,447.98, 937,421.10 and 288,025.47 is: 431,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,447.98 : 937,421.10 = 288,025.47 : x
  2. Step 2: Convert to fraction form
    625,447.98/937,421.10 = 288,025.47/x
  3. Step 3: Cross multiply
    625,447.98x = 937,421.10 × 288,025.47
  4. Step 4: Simplify right side
    625,447.98x = 270,001,152,915.42
  5. Step 5: Solve for x
    x = 270,001,152,915.42/625,447.98
  6. Step 6: Final answer
    x = 431,692.42

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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.