Home / 725,921.82-1,086,753.51-509,028.57

Finding the Fourth Proportional to 725,921.82, 1,086,753.51 and 509,028.57

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Solution

The fourth proportional to 725,921.82, 1,086,753.51 and 509,028.57 is: 762,049.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,921.82 : 1,086,753.51 = 509,028.57 : x
  2. Step 2: Convert to fraction form
    725,921.82/1,086,753.51 = 509,028.57/x
  3. Step 3: Cross multiply
    725,921.82x = 1,086,753.51 × 509,028.57
  4. Step 4: Simplify right side
    725,921.82x = 553,188,585,137.78
  5. Step 5: Solve for x
    x = 553,188,585,137.78/725,921.82
  6. Step 6: Final answer
    x = 762,049.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.