Home / 725,652.30-1,001,412.16-398,979.12

Finding the Fourth Proportional to 725,652.30, 1,001,412.16 and 398,979.12

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Solution

The fourth proportional to 725,652.30, 1,001,412.16 and 398,979.12 is: 550,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,652.30 : 1,001,412.16 = 398,979.12 : x
  2. Step 2: Convert to fraction form
    725,652.30/1,001,412.16 = 398,979.12/x
  3. Step 3: Cross multiply
    725,652.30x = 1,001,412.16 × 398,979.12
  4. Step 4: Simplify right side
    725,652.30x = 399,542,542,354.10
  5. Step 5: Solve for x
    x = 399,542,542,354.10/725,652.30
  6. Step 6: Final answer
    x = 550,597.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.