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Finding the Fourth Proportional to 625,128.52, 862,676.04 and 338,655.64

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Solution

The fourth proportional to 625,128.52, 862,676.04 and 338,655.64 is: 467,344.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,128.52 : 862,676.04 = 338,655.64 : x
  2. Step 2: Convert to fraction form
    625,128.52/862,676.04 = 338,655.64/x
  3. Step 3: Cross multiply
    625,128.52x = 862,676.04 × 338,655.64
  4. Step 4: Simplify right side
    625,128.52x = 292,150,106,438.87
  5. Step 5: Solve for x
    x = 292,150,106,438.87/625,128.52
  6. Step 6: Final answer
    x = 467,344.07

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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.