Home / 814,164.85-1,221,358.79-281,542.87

Finding the Fourth Proportional to 814,164.85, 1,221,358.79 and 281,542.87

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Solution

The fourth proportional to 814,164.85, 1,221,358.79 and 281,542.87 is: 422,352.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,164.85 : 1,221,358.79 = 281,542.87 : x
  2. Step 2: Convert to fraction form
    814,164.85/1,221,358.79 = 281,542.87/x
  3. Step 3: Cross multiply
    814,164.85x = 1,221,358.79 × 281,542.87
  4. Step 4: Simplify right side
    814,164.85x = 343,864,859,036.33
  5. Step 5: Solve for x
    x = 343,864,859,036.33/814,164.85
  6. Step 6: Final answer
    x = 422,352.87

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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.