Home / 814,882.20-1,221,339.15-415,317.30

Finding the Fourth Proportional to 814,882.20, 1,221,339.15 and 415,317.30

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Solution

The fourth proportional to 814,882.20, 1,221,339.15 and 415,317.30 is: 622,474.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,882.20 : 1,221,339.15 = 415,317.30 : x
  2. Step 2: Convert to fraction form
    814,882.20/1,221,339.15 = 415,317.30/x
  3. Step 3: Cross multiply
    814,882.20x = 1,221,339.15 × 415,317.30
  4. Step 4: Simplify right side
    814,882.20x = 507,243,278,162.30
  5. Step 5: Solve for x
    x = 507,243,278,162.30/814,882.20
  6. Step 6: Final answer
    x = 622,474.36

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Double scale
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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.