Home / 815,135.80-1,222,922.40-726,999.70

Finding the Fourth Proportional to 815,135.80, 1,222,922.40 and 726,999.70

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Solution

The fourth proportional to 815,135.80, 1,222,922.40 and 726,999.70 is: 1,090,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,135.80 : 1,222,922.40 = 726,999.70 : x
  2. Step 2: Convert to fraction form
    815,135.80/1,222,922.40 = 726,999.70/x
  3. Step 3: Cross multiply
    815,135.80x = 1,222,922.40 × 726,999.70
  4. Step 4: Simplify right side
    815,135.80x = 889,064,217,923.28
  5. Step 5: Solve for x
    x = 889,064,217,923.28/815,135.80
  6. Step 6: Final answer
    x = 1,090,694.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.