Home / 725,616.30-1,001,351.13-398,934.87

Finding the Fourth Proportional to 725,616.30, 1,001,351.13 and 398,934.87

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Solution

The fourth proportional to 725,616.30, 1,001,351.13 and 398,934.87 is: 550,530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,616.30 : 1,001,351.13 = 398,934.87 : x
  2. Step 2: Convert to fraction form
    725,616.30/1,001,351.13 = 398,934.87/x
  3. Step 3: Cross multiply
    725,616.30x = 1,001,351.13 × 398,934.87
  4. Step 4: Simplify right side
    725,616.30x = 399,473,882,870.90
  5. Step 5: Solve for x
    x = 399,473,882,870.90/725,616.30
  6. Step 6: Final answer
    x = 550,530.47

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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.