Home / 725,839.43-1,088,688.75-220,404.78

Finding the Fourth Proportional to 725,839.43, 1,088,688.75 and 220,404.78

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Solution

The fourth proportional to 725,839.43, 1,088,688.75 and 220,404.78 is: 330,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,839.43 : 1,088,688.75 = 220,404.78 : x
  2. Step 2: Convert to fraction form
    725,839.43/1,088,688.75 = 220,404.78/x
  3. Step 3: Cross multiply
    725,839.43x = 1,088,688.75 × 220,404.78
  4. Step 4: Simplify right side
    725,839.43x = 239,952,204,432.23
  5. Step 5: Solve for x
    x = 239,952,204,432.23/725,839.43
  6. Step 6: Final answer
    x = 330,585.80

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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.