Home / 815,843.70-1,223,765.55-695,121.30

Finding the Fourth Proportional to 815,843.70, 1,223,765.55 and 695,121.30

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Solution

The fourth proportional to 815,843.70, 1,223,765.55 and 695,121.30 is: 1,042,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,843.70 : 1,223,765.55 = 695,121.30 : x
  2. Step 2: Convert to fraction form
    815,843.70/1,223,765.55 = 695,121.30/x
  3. Step 3: Cross multiply
    815,843.70x = 1,223,765.55 × 695,121.30
  4. Step 4: Simplify right side
    815,843.70x = 850,665,500,011.22
  5. Step 5: Solve for x
    x = 850,665,500,011.22/815,843.70
  6. Step 6: Final answer
    x = 1,042,681.95

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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.