Home / 814,513.20-1,221,769.80-281,857.20

Finding the Fourth Proportional to 814,513.20, 1,221,769.80 and 281,857.20

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Solution

The fourth proportional to 814,513.20, 1,221,769.80 and 281,857.20 is: 422,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,513.20 : 1,221,769.80 = 281,857.20 : x
  2. Step 2: Convert to fraction form
    814,513.20/1,221,769.80 = 281,857.20/x
  3. Step 3: Cross multiply
    814,513.20x = 1,221,769.80 × 281,857.20
  4. Step 4: Simplify right side
    814,513.20x = 344,364,614,872.56
  5. Step 5: Solve for x
    x = 344,364,614,872.56/814,513.20
  6. Step 6: Final answer
    x = 422,785.80

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1.5x scale

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.