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Finding the Fourth Proportional to 874,473.79, 1,311,757.62 and 275,481.82

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Solution

The fourth proportional to 874,473.79, 1,311,757.62 and 275,481.82 is: 413,237.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,473.79 : 1,311,757.62 = 275,481.82 : x
  2. Step 2: Convert to fraction form
    874,473.79/1,311,757.62 = 275,481.82/x
  3. Step 3: Cross multiply
    874,473.79x = 1,311,757.62 × 275,481.82
  4. Step 4: Simplify right side
    874,473.79x = 361,365,376,556.47
  5. Step 5: Solve for x
    x = 361,365,376,556.47/874,473.79
  6. Step 6: Final answer
    x = 413,237.52

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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.