Home / 809,218.20-1,213,827.30-276,659.40

Finding the Fourth Proportional to 809,218.20, 1,213,827.30 and 276,659.40

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Solution

The fourth proportional to 809,218.20, 1,213,827.30 and 276,659.40 is: 414,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,218.20 : 1,213,827.30 = 276,659.40 : x
  2. Step 2: Convert to fraction form
    809,218.20/1,213,827.30 = 276,659.40/x
  3. Step 3: Cross multiply
    809,218.20x = 1,213,827.30 × 276,659.40
  4. Step 4: Simplify right side
    809,218.20x = 335,816,732,521.62
  5. Step 5: Solve for x
    x = 335,816,732,521.62/809,218.20
  6. Step 6: Final answer
    x = 414,989.10

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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.