Home / 725,248.96-1,000,821-398,561.20

Finding the Fourth Proportional to 725,248.96, 1,000,821 and 398,561.20

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Solution

The fourth proportional to 725,248.96, 1,000,821 and 398,561.20 is: 550,002.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,248.96 : 1,000,821 = 398,561.20 : x
  2. Step 2: Convert to fraction form
    725,248.96/1,000,821 = 398,561.20/x
  3. Step 3: Cross multiply
    725,248.96x = 1,000,821 × 398,561.20
  4. Step 4: Simplify right side
    725,248.96x = 398,888,418,745.20
  5. Step 5: Solve for x
    x = 398,888,418,745.20/725,248.96
  6. Step 6: Final answer
    x = 550,002.06

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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.