Home / 809,375.80-1,214,063.70-276,914.20

Finding the Fourth Proportional to 809,375.80, 1,214,063.70 and 276,914.20

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Solution

The fourth proportional to 809,375.80, 1,214,063.70 and 276,914.20 is: 415,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,375.80 : 1,214,063.70 = 276,914.20 : x
  2. Step 2: Convert to fraction form
    809,375.80/1,214,063.70 = 276,914.20/x
  3. Step 3: Cross multiply
    809,375.80x = 1,214,063.70 × 276,914.20
  4. Step 4: Simplify right side
    809,375.80x = 336,191,478,234.54
  5. Step 5: Solve for x
    x = 336,191,478,234.54/809,375.80
  6. Step 6: Final answer
    x = 415,371.30

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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.