Home / 819,438.24-1,229,155.20-220,399.20

Finding the Fourth Proportional to 819,438.24, 1,229,155.20 and 220,399.20

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Solution

The fourth proportional to 819,438.24, 1,229,155.20 and 220,399.20 is: 330,598.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,438.24 : 1,229,155.20 = 220,399.20 : x
  2. Step 2: Convert to fraction form
    819,438.24/1,229,155.20 = 220,399.20/x
  3. Step 3: Cross multiply
    819,438.24x = 1,229,155.20 × 220,399.20
  4. Step 4: Simplify right side
    819,438.24x = 270,904,822,755.84
  5. Step 5: Solve for x
    x = 270,904,822,755.84/819,438.24
  6. Step 6: Final answer
    x = 330,598.22

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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.