Home / 643,736.15-965,604.23-343,306.55

Finding the Fourth Proportional to 643,736.15, 965,604.23 and 343,306.55

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Solution

The fourth proportional to 643,736.15, 965,604.23 and 343,306.55 is: 514,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,736.15 : 965,604.23 = 343,306.55 : x
  2. Step 2: Convert to fraction form
    643,736.15/965,604.23 = 343,306.55/x
  3. Step 3: Cross multiply
    643,736.15x = 965,604.23 × 343,306.55
  4. Step 4: Simplify right side
    643,736.15x = 331,498,250,322.15
  5. Step 5: Solve for x
    x = 331,498,250,322.15/643,736.15
  6. Step 6: Final answer
    x = 514,959.82

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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.