Home / 741,143.20-1,112,233.20-320,720.80

Finding the Fourth Proportional to 741,143.20, 1,112,233.20 and 320,720.80

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Solution

The fourth proportional to 741,143.20, 1,112,233.20 and 320,720.80 is: 481,305.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,143.20 : 1,112,233.20 = 320,720.80 : x
  2. Step 2: Convert to fraction form
    741,143.20/1,112,233.20 = 320,720.80/x
  3. Step 3: Cross multiply
    741,143.20x = 1,112,233.20 × 320,720.80
  4. Step 4: Simplify right side
    741,143.20x = 356,716,321,690.56
  5. Step 5: Solve for x
    x = 356,716,321,690.56/741,143.20
  6. Step 6: Final answer
    x = 481,305.53

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Double scale
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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.