Home / 815,757.57-1,223,660.50-389,338.33

Finding the Fourth Proportional to 815,757.57, 1,223,660.50 and 389,338.33

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Solution

The fourth proportional to 815,757.57, 1,223,660.50 and 389,338.33 is: 584,019.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,757.57 : 1,223,660.50 = 389,338.33 : x
  2. Step 2: Convert to fraction form
    815,757.57/1,223,660.50 = 389,338.33/x
  3. Step 3: Cross multiply
    815,757.57x = 1,223,660.50 × 389,338.33
  4. Step 4: Simplify right side
    815,757.57x = 476,417,935,556.97
  5. Step 5: Solve for x
    x = 476,417,935,556.97/815,757.57
  6. Step 6: Final answer
    x = 584,019.02

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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.