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Finding the Fourth Proportional to 625,091.40, 862,630.28 and 338,611.48

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Solution

The fourth proportional to 625,091.40, 862,630.28 and 338,611.48 is: 467,286.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,091.40 : 862,630.28 = 338,611.48 : x
  2. Step 2: Convert to fraction form
    625,091.40/862,630.28 = 338,611.48/x
  3. Step 3: Cross multiply
    625,091.40x = 862,630.28 × 338,611.48
  4. Step 4: Simplify right side
    625,091.40x = 292,096,515,803.61
  5. Step 5: Solve for x
    x = 292,096,515,803.61/625,091.40
  6. Step 6: Final answer
    x = 467,286.09

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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.