Home / 823,340.20-1,235,010.30-324,639.40

Finding the Fourth Proportional to 823,340.20, 1,235,010.30 and 324,639.40

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Solution

The fourth proportional to 823,340.20, 1,235,010.30 and 324,639.40 is: 486,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,340.20 : 1,235,010.30 = 324,639.40 : x
  2. Step 2: Convert to fraction form
    823,340.20/1,235,010.30 = 324,639.40/x
  3. Step 3: Cross multiply
    823,340.20x = 1,235,010.30 × 324,639.40
  4. Step 4: Simplify right side
    823,340.20x = 400,933,002,785.82
  5. Step 5: Solve for x
    x = 400,933,002,785.82/823,340.20
  6. Step 6: Final answer
    x = 486,959.10

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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.