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Finding the Fourth Proportional to 663,447.82, 995,557.17 and 279,168.34

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Solution

The fourth proportional to 663,447.82, 995,557.17 and 279,168.34 is: 418,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,447.82 : 995,557.17 = 279,168.34 : x
  2. Step 2: Convert to fraction form
    663,447.82/995,557.17 = 279,168.34/x
  3. Step 3: Cross multiply
    663,447.82x = 995,557.17 × 279,168.34
  4. Step 4: Simplify right side
    663,447.82x = 277,928,042,524.00
  5. Step 5: Solve for x
    x = 277,928,042,524.00/663,447.82
  6. Step 6: Final answer
    x = 418,914.70

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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.