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Finding the Fourth Proportional to 641,781.41, 885,624.67 and 351,337.29

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Solution

The fourth proportional to 641,781.41, 885,624.67 and 351,337.29 is: 484,827.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,781.41 : 885,624.67 = 351,337.29 : x
  2. Step 2: Convert to fraction form
    641,781.41/885,624.67 = 351,337.29/x
  3. Step 3: Cross multiply
    641,781.41x = 885,624.67 × 351,337.29
  4. Step 4: Simplify right side
    641,781.41x = 311,152,969,758.26
  5. Step 5: Solve for x
    x = 311,152,969,758.26/641,781.41
  6. Step 6: Final answer
    x = 484,827.03

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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.