Home / 725,610.98-1,001,355.14-398,937.80

Finding the Fourth Proportional to 725,610.98, 1,001,355.14 and 398,937.80

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Solution

The fourth proportional to 725,610.98, 1,001,355.14 and 398,937.80 is: 550,540.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,610.98 : 1,001,355.14 = 398,937.80 : x
  2. Step 2: Convert to fraction form
    725,610.98/1,001,355.14 = 398,937.80/x
  3. Step 3: Cross multiply
    725,610.98x = 1,001,355.14 × 398,937.80
  4. Step 4: Simplify right side
    725,610.98x = 399,478,420,071.02
  5. Step 5: Solve for x
    x = 399,478,420,071.02/725,610.98
  6. Step 6: Final answer
    x = 550,540.76

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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.