Home / 725,838.42-1,088,687.25-220,403.78

Finding the Fourth Proportional to 725,838.42, 1,088,687.25 and 220,403.78

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Solution

The fourth proportional to 725,838.42, 1,088,687.25 and 220,403.78 is: 330,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,838.42 : 1,088,687.25 = 220,403.78 : x
  2. Step 2: Convert to fraction form
    725,838.42/1,088,687.25 = 220,403.78/x
  3. Step 3: Cross multiply
    725,838.42x = 1,088,687.25 × 220,403.78
  4. Step 4: Simplify right side
    725,838.42x = 239,950,785,298.43
  5. Step 5: Solve for x
    x = 239,950,785,298.43/725,838.42
  6. Step 6: Final answer
    x = 330,584.30

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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.