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Finding the Fourth Proportional to 625,119.63, 862,664.31 and 338,640.90

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Solution

The fourth proportional to 625,119.63, 862,664.31 and 338,640.90 is: 467,324.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,119.63 : 862,664.31 = 338,640.90 : x
  2. Step 2: Convert to fraction form
    625,119.63/862,664.31 = 338,640.90/x
  3. Step 3: Cross multiply
    625,119.63x = 862,664.31 × 338,640.90
  4. Step 4: Simplify right side
    625,119.63x = 292,133,418,336.28
  5. Step 5: Solve for x
    x = 292,133,418,336.28/625,119.63
  6. Step 6: Final answer
    x = 467,324.02

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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.