Home / 809,246.10-1,213,869.15-276,638.70

Finding the Fourth Proportional to 809,246.10, 1,213,869.15 and 276,638.70

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Solution

The fourth proportional to 809,246.10, 1,213,869.15 and 276,638.70 is: 414,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,246.10 : 1,213,869.15 = 276,638.70 : x
  2. Step 2: Convert to fraction form
    809,246.10/1,213,869.15 = 276,638.70/x
  3. Step 3: Cross multiply
    809,246.10x = 1,213,869.15 × 276,638.70
  4. Step 4: Simplify right side
    809,246.10x = 335,803,183,626.11
  5. Step 5: Solve for x
    x = 335,803,183,626.11/809,246.10
  6. Step 6: Final answer
    x = 414,958.05

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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.