Home / 812,375.94-1,121,000.96-449,786.52

Finding the Fourth Proportional to 812,375.94, 1,121,000.96 and 449,786.52

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Solution

The fourth proportional to 812,375.94, 1,121,000.96 and 449,786.52 is: 620,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,375.94 : 1,121,000.96 = 449,786.52 : x
  2. Step 2: Convert to fraction form
    812,375.94/1,121,000.96 = 449,786.52/x
  3. Step 3: Cross multiply
    812,375.94x = 1,121,000.96 × 449,786.52
  4. Step 4: Simplify right side
    812,375.94x = 504,211,120,715.06
  5. Step 5: Solve for x
    x = 504,211,120,715.06/812,375.94
  6. Step 6: Final answer
    x = 620,662.30

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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.