Home / 812,354.28-1,121,083.94-449,778.15

Finding the Fourth Proportional to 812,354.28, 1,121,083.94 and 449,778.15

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Solution

The fourth proportional to 812,354.28, 1,121,083.94 and 449,778.15 is: 620,713.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,354.28 : 1,121,083.94 = 449,778.15 : x
  2. Step 2: Convert to fraction form
    812,354.28/1,121,083.94 = 449,778.15/x
  3. Step 3: Cross multiply
    812,354.28x = 1,121,083.94 × 449,778.15
  4. Step 4: Simplify right side
    812,354.28x = 504,239,061,652.36
  5. Step 5: Solve for x
    x = 504,239,061,652.36/812,354.28
  6. Step 6: Final answer
    x = 620,713.25

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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.