Home / 812,450.92-1,121,168.60-449,867

Finding the Fourth Proportional to 812,450.92, 1,121,168.60 and 449,867

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Solution

The fourth proportional to 812,450.92, 1,121,168.60 and 449,867 is: 620,808.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,450.92 : 1,121,168.60 = 449,867 : x
  2. Step 2: Convert to fraction form
    812,450.92/1,121,168.60 = 449,867/x
  3. Step 3: Cross multiply
    812,450.92x = 1,121,168.60 × 449,867
  4. Step 4: Simplify right side
    812,450.92x = 504,376,754,576.20
  5. Step 5: Solve for x
    x = 504,376,754,576.20/812,450.92
  6. Step 6: Final answer
    x = 620,808.89

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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.