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Finding the Fourth Proportional to 625,286.70, 862,896.42 and 338,806.71

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Solution

The fourth proportional to 625,286.70, 862,896.42 and 338,806.71 is: 467,553.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,286.70 : 862,896.42 = 338,806.71 : x
  2. Step 2: Convert to fraction form
    625,286.70/862,896.42 = 338,806.71/x
  3. Step 3: Cross multiply
    625,286.70x = 862,896.42 × 338,806.71
  4. Step 4: Simplify right side
    625,286.70x = 292,355,097,130.98
  5. Step 5: Solve for x
    x = 292,355,097,130.98/625,286.70
  6. Step 6: Final answer
    x = 467,553.68

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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.