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Finding the Fourth Proportional to 625,113.55, 862,659.30 and 338,633.61

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Solution

The fourth proportional to 625,113.55, 862,659.30 and 338,633.61 is: 467,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,113.55 : 862,659.30 = 338,633.61 : x
  2. Step 2: Convert to fraction form
    625,113.55/862,659.30 = 338,633.61/x
  3. Step 3: Cross multiply
    625,113.55x = 862,659.30 × 338,633.61
  4. Step 4: Simplify right side
    625,113.55x = 292,125,432,959.07
  5. Step 5: Solve for x
    x = 292,125,432,959.07/625,113.55
  6. Step 6: Final answer
    x = 467,315.79

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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.