Home / 728,378.88-1,092,568.80-229,781.76

Finding the Fourth Proportional to 728,378.88, 1,092,568.80 and 229,781.76

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Solution

The fourth proportional to 728,378.88, 1,092,568.80 and 229,781.76 is: 344,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,378.88 : 1,092,568.80 = 229,781.76 : x
  2. Step 2: Convert to fraction form
    728,378.88/1,092,568.80 = 229,781.76/x
  3. Step 3: Cross multiply
    728,378.88x = 1,092,568.80 × 229,781.76
  4. Step 4: Simplify right side
    728,378.88x = 251,052,381,785.09
  5. Step 5: Solve for x
    x = 251,052,381,785.09/728,378.88
  6. Step 6: Final answer
    x = 344,672.79

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1.5x scale

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.