Home / 819,974.40-1,131,134.40-667,183.20

Finding the Fourth Proportional to 819,974.40, 1,131,134.40 and 667,183.20

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Solution

The fourth proportional to 819,974.40, 1,131,134.40 and 667,183.20 is: 920,362.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,974.40 : 1,131,134.40 = 667,183.20 : x
  2. Step 2: Convert to fraction form
    819,974.40/1,131,134.40 = 667,183.20/x
  3. Step 3: Cross multiply
    819,974.40x = 1,131,134.40 × 667,183.20
  4. Step 4: Simplify right side
    819,974.40x = 754,673,868,622.08
  5. Step 5: Solve for x
    x = 754,673,868,622.08/819,974.40
  6. Step 6: Final answer
    x = 920,362.72

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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.