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Finding the Fourth Proportional to 625,130.66, 862,679.46 and 338,651.90

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Solution

The fourth proportional to 625,130.66, 862,679.46 and 338,651.90 is: 467,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,130.66 : 862,679.46 = 338,651.90 : x
  2. Step 2: Convert to fraction form
    625,130.66/862,679.46 = 338,651.90/x
  3. Step 3: Cross multiply
    625,130.66x = 862,679.46 × 338,651.90
  4. Step 4: Simplify right side
    625,130.66x = 292,148,038,219.97
  5. Step 5: Solve for x
    x = 292,148,038,219.97/625,130.66
  6. Step 6: Final answer
    x = 467,339.16

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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.