Home / 810,511.24-1,215,753.42-311,983.24

Finding the Fourth Proportional to 810,511.24, 1,215,753.42 and 311,983.24

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Solution

The fourth proportional to 810,511.24, 1,215,753.42 and 311,983.24 is: 467,969.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,511.24 : 1,215,753.42 = 311,983.24 : x
  2. Step 2: Convert to fraction form
    810,511.24/1,215,753.42 = 311,983.24/x
  3. Step 3: Cross multiply
    810,511.24x = 1,215,753.42 × 311,983.24
  4. Step 4: Simplify right side
    810,511.24x = 379,294,691,012.68
  5. Step 5: Solve for x
    x = 379,294,691,012.68/810,511.24
  6. Step 6: Final answer
    x = 467,969.69

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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.