Home / 812,696.92-1,219,125.50-280,147.84

Finding the Fourth Proportional to 812,696.92, 1,219,125.50 and 280,147.84

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Solution

The fourth proportional to 812,696.92, 1,219,125.50 and 280,147.84 is: 420,249.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,696.92 : 1,219,125.50 = 280,147.84 : x
  2. Step 2: Convert to fraction form
    812,696.92/1,219,125.50 = 280,147.84/x
  3. Step 3: Cross multiply
    812,696.92x = 1,219,125.50 × 280,147.84
  4. Step 4: Simplify right side
    812,696.92x = 341,535,375,513.92
  5. Step 5: Solve for x
    x = 341,535,375,513.92/812,696.92
  6. Step 6: Final answer
    x = 420,249.38

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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.