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Finding the Fourth Proportional to 814,259, 1,123,561.04 and 487,493.72

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Solution

The fourth proportional to 814,259, 1,123,561.04 and 487,493.72 is: 672,671.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,259 : 1,123,561.04 = 487,493.72 : x
  2. Step 2: Convert to fraction form
    814,259/1,123,561.04 = 487,493.72/x
  3. Step 3: Cross multiply
    814,259x = 1,123,561.04 × 487,493.72
  4. Step 4: Simplify right side
    814,259x = 547,728,951,036.67
  5. Step 5: Solve for x
    x = 547,728,951,036.67/814,259
  6. Step 6: Final answer
    x = 672,671.66

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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.