Home / 812,450.27-1,121,167.63-449,866.32

Finding the Fourth Proportional to 812,450.27, 1,121,167.63 and 449,866.32

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Solution

The fourth proportional to 812,450.27, 1,121,167.63 and 449,866.32 is: 620,807.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,450.27 : 1,121,167.63 = 449,866.32 : x
  2. Step 2: Convert to fraction form
    812,450.27/1,121,167.63 = 449,866.32/x
  3. Step 3: Cross multiply
    812,450.27x = 1,121,167.63 × 449,866.32
  4. Step 4: Simplify right side
    812,450.27x = 504,375,555,811.22
  5. Step 5: Solve for x
    x = 504,375,555,811.22/812,450.27
  6. Step 6: Final answer
    x = 620,807.92

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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.