Home / 816,418.20-1,224,821.70-342,859.80

Finding the Fourth Proportional to 816,418.20, 1,224,821.70 and 342,859.80

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Solution

The fourth proportional to 816,418.20, 1,224,821.70 and 342,859.80 is: 514,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,418.20 : 1,224,821.70 = 342,859.80 : x
  2. Step 2: Convert to fraction form
    816,418.20/1,224,821.70 = 342,859.80/x
  3. Step 3: Cross multiply
    816,418.20x = 1,224,821.70 × 342,859.80
  4. Step 4: Simplify right side
    816,418.20x = 419,942,123,097.66
  5. Step 5: Solve for x
    x = 419,942,123,097.66/816,418.20
  6. Step 6: Final answer
    x = 514,371.34

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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.