Home / 809,371.20-1,214,056.80-276,715.20

Finding the Fourth Proportional to 809,371.20, 1,214,056.80 and 276,715.20

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Solution

The fourth proportional to 809,371.20, 1,214,056.80 and 276,715.20 is: 415,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,371.20 : 1,214,056.80 = 276,715.20 : x
  2. Step 2: Convert to fraction form
    809,371.20/1,214,056.80 = 276,715.20/x
  3. Step 3: Cross multiply
    809,371.20x = 1,214,056.80 × 276,715.20
  4. Step 4: Simplify right side
    809,371.20x = 335,947,970,223.36
  5. Step 5: Solve for x
    x = 335,947,970,223.36/809,371.20
  6. Step 6: Final answer
    x = 415,072.80

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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.