Home / 812,475.87-1,121,216.00-449,899.71

Finding the Fourth Proportional to 812,475.87, 1,121,216.00 and 449,899.71

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Solution

The fourth proportional to 812,475.87, 1,121,216.00 and 449,899.71 is: 620,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,475.87 : 1,121,216.00 = 449,899.71 : x
  2. Step 2: Convert to fraction form
    812,475.87/1,121,216.00 = 449,899.71/x
  3. Step 3: Cross multiply
    812,475.87x = 1,121,216.00 × 449,899.71
  4. Step 4: Simplify right side
    812,475.87x = 504,434,750,997.86
  5. Step 5: Solve for x
    x = 504,434,750,997.86/812,475.87
  6. Step 6: Final answer
    x = 620,861.21

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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.