Home / 812,179.99-1,120,817.25-449,609.90

Finding the Fourth Proportional to 812,179.99, 1,120,817.25 and 449,609.90

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Solution

The fourth proportional to 812,179.99, 1,120,817.25 and 449,609.90 is: 620,466.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,179.99 : 1,120,817.25 = 449,609.90 : x
  2. Step 2: Convert to fraction form
    812,179.99/1,120,817.25 = 449,609.90/x
  3. Step 3: Cross multiply
    812,179.99x = 1,120,817.25 × 449,609.90
  4. Step 4: Simplify right side
    812,179.99x = 503,930,532,391.29
  5. Step 5: Solve for x
    x = 503,930,532,391.29/812,179.99
  6. Step 6: Final answer
    x = 620,466.57

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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.