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Finding the Fourth Proportional to 641,950.33, 885,891.41 and 355,470.41

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Solution

The fourth proportional to 641,950.33, 885,891.41 and 355,470.41 is: 490,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,950.33 : 885,891.41 = 355,470.41 : x
  2. Step 2: Convert to fraction form
    641,950.33/885,891.41 = 355,470.41/x
  3. Step 3: Cross multiply
    641,950.33x = 885,891.41 × 355,470.41
  4. Step 4: Simplify right side
    641,950.33x = 314,908,183,165.56
  5. Step 5: Solve for x
    x = 314,908,183,165.56/641,950.33
  6. Step 6: Final answer
    x = 490,549.14

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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.