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Finding the Fourth Proportional to 628,884.85, 867,842.13 and 349,481.09

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Solution

The fourth proportional to 628,884.85, 867,842.13 and 349,481.09 is: 482,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,884.85 : 867,842.13 = 349,481.09 : x
  2. Step 2: Convert to fraction form
    628,884.85/867,842.13 = 349,481.09/x
  3. Step 3: Cross multiply
    628,884.85x = 867,842.13 × 349,481.09
  4. Step 4: Simplify right side
    628,884.85x = 303,294,413,540.32
  5. Step 5: Solve for x
    x = 303,294,413,540.32/628,884.85
  6. Step 6: Final answer
    x = 482,273.37

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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.