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Finding the Fourth Proportional to 639,344.96, 882,294.24 and 352,863

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Solution

The fourth proportional to 639,344.96, 882,294.24 and 352,863 is: 486,949.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,344.96 : 882,294.24 = 352,863 : x
  2. Step 2: Convert to fraction form
    639,344.96/882,294.24 = 352,863/x
  3. Step 3: Cross multiply
    639,344.96x = 882,294.24 × 352,863
  4. Step 4: Simplify right side
    639,344.96x = 311,328,991,747.50
  5. Step 5: Solve for x
    x = 311,328,991,747.50/639,344.96
  6. Step 6: Final answer
    x = 486,949.94

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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.