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Finding the Fourth Proportional to 641,767.73, 885,604.34 and 351,323.12

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Solution

The fourth proportional to 641,767.73, 885,604.34 and 351,323.12 is: 484,806.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,767.73 : 885,604.34 = 351,323.12 : x
  2. Step 2: Convert to fraction form
    641,767.73/885,604.34 = 351,323.12/x
  3. Step 3: Cross multiply
    641,767.73x = 885,604.34 × 351,323.12
  4. Step 4: Simplify right side
    641,767.73x = 311,133,279,814.34
  5. Step 5: Solve for x
    x = 311,133,279,814.34/641,767.73
  6. Step 6: Final answer
    x = 484,806.68

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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.