Home / 725,116.67-1,000,753.26-438,638.81

Finding the Fourth Proportional to 725,116.67, 1,000,753.26 and 438,638.81

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Solution

The fourth proportional to 725,116.67, 1,000,753.26 and 438,638.81 is: 605,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,116.67 : 1,000,753.26 = 438,638.81 : x
  2. Step 2: Convert to fraction form
    725,116.67/1,000,753.26 = 438,638.81/x
  3. Step 3: Cross multiply
    725,116.67x = 1,000,753.26 × 438,638.81
  4. Step 4: Simplify right side
    725,116.67x = 438,969,215,711.15
  5. Step 5: Solve for x
    x = 438,969,215,711.15/725,116.67
  6. Step 6: Final answer
    x = 605,377.36

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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.