Home / 725,134.16-1,086,781.08-409,767.68

Finding the Fourth Proportional to 725,134.16, 1,086,781.08 and 409,767.68

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Solution

The fourth proportional to 725,134.16, 1,086,781.08 and 409,767.68 is: 614,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,134.16 : 1,086,781.08 = 409,767.68 : x
  2. Step 2: Convert to fraction form
    725,134.16/1,086,781.08 = 409,767.68/x
  3. Step 3: Cross multiply
    725,134.16x = 1,086,781.08 × 409,767.68
  4. Step 4: Simplify right side
    725,134.16x = 445,327,761,819.49
  5. Step 5: Solve for x
    x = 445,327,761,819.49/725,134.16
  6. Step 6: Final answer
    x = 614,131.54

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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.