Home / 821,174.20-1,229,687.70-655,286.20

Finding the Fourth Proportional to 821,174.20, 1,229,687.70 and 655,286.20

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Solution

The fourth proportional to 821,174.20, 1,229,687.70 and 655,286.20 is: 981,274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,174.20 : 1,229,687.70 = 655,286.20 : x
  2. Step 2: Convert to fraction form
    821,174.20/1,229,687.70 = 655,286.20/x
  3. Step 3: Cross multiply
    821,174.20x = 1,229,687.70 × 655,286.20
  4. Step 4: Simplify right side
    821,174.20x = 805,797,380,119.74
  5. Step 5: Solve for x
    x = 805,797,380,119.74/821,174.20
  6. Step 6: Final answer
    x = 981,274.59

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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.