Home / 812,185.09-1,120,824.29-449,615

Finding the Fourth Proportional to 812,185.09, 1,120,824.29 and 449,615

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Solution

The fourth proportional to 812,185.09, 1,120,824.29 and 449,615 is: 620,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,185.09 : 1,120,824.29 = 449,615 : x
  2. Step 2: Convert to fraction form
    812,185.09/1,120,824.29 = 449,615/x
  3. Step 3: Cross multiply
    812,185.09x = 1,120,824.29 × 449,615
  4. Step 4: Simplify right side
    812,185.09x = 503,939,413,148.35
  5. Step 5: Solve for x
    x = 503,939,413,148.35/812,185.09
  6. Step 6: Final answer
    x = 620,473.61

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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.