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Finding the Fourth Proportional to 625,119.64, 862,669.25 and 338,639.52

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Solution

The fourth proportional to 625,119.64, 862,669.25 and 338,639.52 is: 467,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,119.64 : 862,669.25 = 338,639.52 : x
  2. Step 2: Convert to fraction form
    625,119.64/862,669.25 = 338,639.52/x
  3. Step 3: Cross multiply
    625,119.64x = 862,669.25 × 338,639.52
  4. Step 4: Simplify right side
    625,119.64x = 292,133,894,732.22
  5. Step 5: Solve for x
    x = 292,133,894,732.22/625,119.64
  6. Step 6: Final answer
    x = 467,324.77

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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.