Home / 721,859.60-1,082,789.40-674,620.40

Finding the Fourth Proportional to 721,859.60, 1,082,789.40 and 674,620.40

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Solution

The fourth proportional to 721,859.60, 1,082,789.40 and 674,620.40 is: 1,011,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,859.60 : 1,082,789.40 = 674,620.40 : x
  2. Step 2: Convert to fraction form
    721,859.60/1,082,789.40 = 674,620.40/x
  3. Step 3: Cross multiply
    721,859.60x = 1,082,789.40 × 674,620.40
  4. Step 4: Simplify right side
    721,859.60x = 730,471,818,143.76
  5. Step 5: Solve for x
    x = 730,471,818,143.76/721,859.60
  6. Step 6: Final answer
    x = 1,011,930.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.