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Finding the Fourth Proportional to 641,732.95, 885,601.97 and 351,339.68

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Solution

The fourth proportional to 641,732.95, 885,601.97 and 351,339.68 is: 484,854.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,732.95 : 885,601.97 = 351,339.68 : x
  2. Step 2: Convert to fraction form
    641,732.95/885,601.97 = 351,339.68/x
  3. Step 3: Cross multiply
    641,732.95x = 885,601.97 × 351,339.68
  4. Step 4: Simplify right side
    641,732.95x = 311,147,112,747.17
  5. Step 5: Solve for x
    x = 311,147,112,747.17/641,732.95
  6. Step 6: Final answer
    x = 484,854.51

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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.