Home / 809,337.20-1,214,005.80-276,778.40

Finding the Fourth Proportional to 809,337.20, 1,214,005.80 and 276,778.40

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Solution

The fourth proportional to 809,337.20, 1,214,005.80 and 276,778.40 is: 415,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,337.20 : 1,214,005.80 = 276,778.40 : x
  2. Step 2: Convert to fraction form
    809,337.20/1,214,005.80 = 276,778.40/x
  3. Step 3: Cross multiply
    809,337.20x = 1,214,005.80 × 276,778.40
  4. Step 4: Simplify right side
    809,337.20x = 336,010,582,914.72
  5. Step 5: Solve for x
    x = 336,010,582,914.72/809,337.20
  6. Step 6: Final answer
    x = 415,167.60

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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.