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Finding the Fourth Proportional to 625,414.60, 863,072.88 and 338,934.68

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Solution

The fourth proportional to 625,414.60, 863,072.88 and 338,934.68 is: 467,730.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,414.60 : 863,072.88 = 338,934.68 : x
  2. Step 2: Convert to fraction form
    625,414.60/863,072.88 = 338,934.68/x
  3. Step 3: Cross multiply
    625,414.60x = 863,072.88 × 338,934.68
  4. Step 4: Simplify right side
    625,414.60x = 292,525,330,399.48
  5. Step 5: Solve for x
    x = 292,525,330,399.48/625,414.60
  6. Step 6: Final answer
    x = 467,730.26

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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.