Home / 812,367.03-1,121,101.56-449,790.90

Finding the Fourth Proportional to 812,367.03, 1,121,101.56 and 449,790.90

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Solution

The fourth proportional to 812,367.03, 1,121,101.56 and 449,790.90 is: 620,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,367.03 : 1,121,101.56 = 449,790.90 : x
  2. Step 2: Convert to fraction form
    812,367.03/1,121,101.56 = 449,790.90/x
  3. Step 3: Cross multiply
    812,367.03x = 1,121,101.56 × 449,790.90
  4. Step 4: Simplify right side
    812,367.03x = 504,261,279,663.80
  5. Step 5: Solve for x
    x = 504,261,279,663.80/812,367.03
  6. Step 6: Final answer
    x = 620,730.85

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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.