Home / 725,642.22-1,001,398.23-398,969.02

Finding the Fourth Proportional to 725,642.22, 1,001,398.23 and 398,969.02

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Solution

The fourth proportional to 725,642.22, 1,001,398.23 and 398,969.02 is: 550,583.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,642.22 : 1,001,398.23 = 398,969.02 : x
  2. Step 2: Convert to fraction form
    725,642.22/1,001,398.23 = 398,969.02/x
  3. Step 3: Cross multiply
    725,642.22x = 1,001,398.23 × 398,969.02
  4. Step 4: Simplify right side
    725,642.22x = 399,526,871,704.58
  5. Step 5: Solve for x
    x = 399,526,871,704.58/725,642.22
  6. Step 6: Final answer
    x = 550,583.83

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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.