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Finding the Fourth Proportional to 625,595.92, 862,764.94 and 487,809

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Solution

The fourth proportional to 625,595.92, 862,764.94 and 487,809 is: 672,741.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,595.92 : 862,764.94 = 487,809 : x
  2. Step 2: Convert to fraction form
    625,595.92/862,764.94 = 487,809/x
  3. Step 3: Cross multiply
    625,595.92x = 862,764.94 × 487,809
  4. Step 4: Simplify right side
    625,595.92x = 420,864,502,616.46
  5. Step 5: Solve for x
    x = 420,864,502,616.46/625,595.92
  6. Step 6: Final answer
    x = 672,741.76

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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.