Home / 814,226.20-1,221,339.30-440,978.20

Finding the Fourth Proportional to 814,226.20, 1,221,339.30 and 440,978.20

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Solution

The fourth proportional to 814,226.20, 1,221,339.30 and 440,978.20 is: 661,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,226.20 : 1,221,339.30 = 440,978.20 : x
  2. Step 2: Convert to fraction form
    814,226.20/1,221,339.30 = 440,978.20/x
  3. Step 3: Cross multiply
    814,226.20x = 1,221,339.30 × 440,978.20
  4. Step 4: Simplify right side
    814,226.20x = 538,584,006,103.26
  5. Step 5: Solve for x
    x = 538,584,006,103.26/814,226.20
  6. Step 6: Final answer
    x = 661,467.30

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Double scale
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Similar ratio
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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.