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Finding the Fourth Proportional to 625,109.54, 862,650.34 and 338,630.90

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Solution

The fourth proportional to 625,109.54, 862,650.34 and 338,630.90 is: 467,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,109.54 : 862,650.34 = 338,630.90 : x
  2. Step 2: Convert to fraction form
    625,109.54/862,650.34 = 338,630.90/x
  3. Step 3: Cross multiply
    625,109.54x = 862,650.34 × 338,630.90
  4. Step 4: Simplify right side
    625,109.54x = 292,120,055,859.68
  5. Step 5: Solve for x
    x = 292,120,055,859.68/625,109.54
  6. Step 6: Final answer
    x = 467,310.19

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1.5x scale

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.