Home / 812,449.33-1,121,166.36-449,865.38

Finding the Fourth Proportional to 812,449.33, 1,121,166.36 and 449,865.38

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Solution

The fourth proportional to 812,449.33, 1,121,166.36 and 449,865.38 is: 620,806.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,449.33 : 1,121,166.36 = 449,865.38 : x
  2. Step 2: Convert to fraction form
    812,449.33/1,121,166.36 = 449,865.38/x
  3. Step 3: Cross multiply
    812,449.33x = 1,121,166.36 × 449,865.38
  4. Step 4: Simplify right side
    812,449.33x = 504,373,930,584.62
  5. Step 5: Solve for x
    x = 504,373,930,584.62/812,449.33
  6. Step 6: Final answer
    x = 620,806.63

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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.