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Finding the Fourth Proportional to 625,594.92, 862,763.56 and 487,808

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Solution

The fourth proportional to 625,594.92, 862,763.56 and 487,808 is: 672,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,594.92 : 862,763.56 = 487,808 : x
  2. Step 2: Convert to fraction form
    625,594.92/862,763.56 = 487,808/x
  3. Step 3: Cross multiply
    625,594.92x = 862,763.56 × 487,808
  4. Step 4: Simplify right side
    625,594.92x = 420,862,966,676.48
  5. Step 5: Solve for x
    x = 420,862,966,676.48/625,594.92
  6. Step 6: Final answer
    x = 672,740.38

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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.