Home / 611,278.20-916,917.30-256,174.20

Finding the Fourth Proportional to 611,278.20, 916,917.30 and 256,174.20

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Solution

The fourth proportional to 611,278.20, 916,917.30 and 256,174.20 is: 384,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,278.20 : 916,917.30 = 256,174.20 : x
  2. Step 2: Convert to fraction form
    611,278.20/916,917.30 = 256,174.20/x
  3. Step 3: Cross multiply
    611,278.20x = 916,917.30 × 256,174.20
  4. Step 4: Simplify right side
    611,278.20x = 234,890,555,793.66
  5. Step 5: Solve for x
    x = 234,890,555,793.66/611,278.20
  6. Step 6: Final answer
    x = 384,261.30

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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.