Home / 699,839.73-965,809.53-393,935.85

Finding the Fourth Proportional to 699,839.73, 965,809.53 and 393,935.85

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Solution

The fourth proportional to 699,839.73, 965,809.53 and 393,935.85 is: 543,648.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,839.73 : 965,809.53 = 393,935.85 : x
  2. Step 2: Convert to fraction form
    699,839.73/965,809.53 = 393,935.85/x
  3. Step 3: Cross multiply
    699,839.73x = 965,809.53 × 393,935.85
  4. Step 4: Simplify right side
    699,839.73x = 380,466,998,138.65
  5. Step 5: Solve for x
    x = 380,466,998,138.65/699,839.73
  6. Step 6: Final answer
    x = 543,648.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.