Home / 819,721.53-1,229,581.17-220,683.33

Finding the Fourth Proportional to 819,721.53, 1,229,581.17 and 220,683.33

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Solution

The fourth proportional to 819,721.53, 1,229,581.17 and 220,683.33 is: 331,024.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,721.53 : 1,229,581.17 = 220,683.33 : x
  2. Step 2: Convert to fraction form
    819,721.53/1,229,581.17 = 220,683.33/x
  3. Step 3: Cross multiply
    819,721.53x = 1,229,581.17 × 220,683.33
  4. Step 4: Simplify right side
    819,721.53x = 271,348,067,100.90
  5. Step 5: Solve for x
    x = 271,348,067,100.90/819,721.53
  6. Step 6: Final answer
    x = 331,024.69

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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.