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Finding the Fourth Proportional to 625,630.38, 938,680.47 and 288,832.38

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Solution

The fourth proportional to 625,630.38, 938,680.47 and 288,832.38 is: 433,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,630.38 : 938,680.47 = 288,832.38 : x
  2. Step 2: Convert to fraction form
    625,630.38/938,680.47 = 288,832.38/x
  3. Step 3: Cross multiply
    625,630.38x = 938,680.47 × 288,832.38
  4. Step 4: Simplify right side
    625,630.38x = 271,121,314,209.62
  5. Step 5: Solve for x
    x = 271,121,314,209.62/625,630.38
  6. Step 6: Final answer
    x = 433,357.02

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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.