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Finding the Fourth Proportional to 641,344.68, 885,042 and 350,955.09

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Solution

The fourth proportional to 641,344.68, 885,042 and 350,955.09 is: 484,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,344.68 : 885,042 = 350,955.09 : x
  2. Step 2: Convert to fraction form
    641,344.68/885,042 = 350,955.09/x
  3. Step 3: Cross multiply
    641,344.68x = 885,042 × 350,955.09
  4. Step 4: Simplify right side
    641,344.68x = 310,609,994,763.78
  5. Step 5: Solve for x
    x = 310,609,994,763.78/641,344.68
  6. Step 6: Final answer
    x = 484,310.55

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1.5x scale

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.