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Finding the Fourth Proportional to 625,412.52, 863,067.96 and 338,939.64

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Solution

The fourth proportional to 625,412.52, 863,067.96 and 338,939.64 is: 467,735.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,412.52 : 863,067.96 = 338,939.64 : x
  2. Step 2: Convert to fraction form
    625,412.52/863,067.96 = 338,939.64/x
  3. Step 3: Cross multiply
    625,412.52x = 863,067.96 × 338,939.64
  4. Step 4: Simplify right side
    625,412.52x = 292,527,943,657.93
  5. Step 5: Solve for x
    x = 292,527,943,657.93/625,412.52
  6. Step 6: Final answer
    x = 467,735.99

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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.