Home / 814,189.10-1,221,286.79-340,542.22

Finding the Fourth Proportional to 814,189.10, 1,221,286.79 and 340,542.22

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Solution

The fourth proportional to 814,189.10, 1,221,286.79 and 340,542.22 is: 510,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,189.10 : 1,221,286.79 = 340,542.22 : x
  2. Step 2: Convert to fraction form
    814,189.10/1,221,286.79 = 340,542.22/x
  3. Step 3: Cross multiply
    814,189.10x = 1,221,286.79 × 340,542.22
  4. Step 4: Simplify right side
    814,189.10x = 415,899,714,723.27
  5. Step 5: Solve for x
    x = 415,899,714,723.27/814,189.10
  6. Step 6: Final answer
    x = 510,814.64

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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.