Home / 815,999.32-1,126,104.42-448,469.79

Finding the Fourth Proportional to 815,999.32, 1,126,104.42 and 448,469.79

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Solution

The fourth proportional to 815,999.32, 1,126,104.42 and 448,469.79 is: 618,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,999.32 : 1,126,104.42 = 448,469.79 : x
  2. Step 2: Convert to fraction form
    815,999.32/1,126,104.42 = 448,469.79/x
  3. Step 3: Cross multiply
    815,999.32x = 1,126,104.42 × 448,469.79
  4. Step 4: Simplify right side
    815,999.32x = 505,023,812,755.47
  5. Step 5: Solve for x
    x = 505,023,812,755.47/815,999.32
  6. Step 6: Final answer
    x = 618,902.25

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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.