Home / 812,436.54-1,121,174.22-449,859.70

Finding the Fourth Proportional to 812,436.54, 1,121,174.22 and 449,859.70

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Solution

The fourth proportional to 812,436.54, 1,121,174.22 and 449,859.70 is: 620,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,436.54 : 1,121,174.22 = 449,859.70 : x
  2. Step 2: Convert to fraction form
    812,436.54/1,121,174.22 = 449,859.70/x
  3. Step 3: Cross multiply
    812,436.54x = 1,121,174.22 × 449,859.70
  4. Step 4: Simplify right side
    812,436.54x = 504,371,098,256.93
  5. Step 5: Solve for x
    x = 504,371,098,256.93/812,436.54
  6. Step 6: Final answer
    x = 620,812.92

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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.