Home / 812,115.52-1,120,729.30-449,572.90

Finding the Fourth Proportional to 812,115.52, 1,120,729.30 and 449,572.90

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Solution

The fourth proportional to 812,115.52, 1,120,729.30 and 449,572.90 is: 620,416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,115.52 : 1,120,729.30 = 449,572.90 : x
  2. Step 2: Convert to fraction form
    812,115.52/1,120,729.30 = 449,572.90/x
  3. Step 3: Cross multiply
    812,115.52x = 1,120,729.30 × 449,572.90
  4. Step 4: Simplify right side
    812,115.52x = 503,849,521,515.97
  5. Step 5: Solve for x
    x = 503,849,521,515.97/812,115.52
  6. Step 6: Final answer
    x = 620,416.07

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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.