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Finding the Fourth Proportional to 667,540.09, 1,001,310 and 443,338.39

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Solution

The fourth proportional to 667,540.09, 1,001,310 and 443,338.39 is: 665,007.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,540.09 : 1,001,310 = 443,338.39 : x
  2. Step 2: Convert to fraction form
    667,540.09/1,001,310 = 443,338.39/x
  3. Step 3: Cross multiply
    667,540.09x = 1,001,310 × 443,338.39
  4. Step 4: Simplify right side
    667,540.09x = 443,919,163,290.90
  5. Step 5: Solve for x
    x = 443,919,163,290.90/667,540.09
  6. Step 6: Final answer
    x = 665,007.50

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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.