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Finding the Fourth Proportional to 642,508.22, 963,755.41 and 263,344.45

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Solution

The fourth proportional to 642,508.22, 963,755.41 and 263,344.45 is: 395,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,508.22 : 963,755.41 = 263,344.45 : x
  2. Step 2: Convert to fraction form
    642,508.22/963,755.41 = 263,344.45/x
  3. Step 3: Cross multiply
    642,508.22x = 963,755.41 × 263,344.45
  4. Step 4: Simplify right side
    642,508.22x = 253,799,635,313.23
  5. Step 5: Solve for x
    x = 253,799,635,313.23/642,508.22
  6. Step 6: Final answer
    x = 395,013.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.