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Finding the Fourth Proportional to 2,631,180, 3,947,394 and 858,252

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Solution

The fourth proportional to 2,631,180, 3,947,394 and 858,252 is: 1,287,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631,180 : 3,947,394 = 858,252 : x
  2. Step 2: Convert to fraction form
    2,631,180/3,947,394 = 858,252/x
  3. Step 3: Cross multiply
    2,631,180x = 3,947,394 × 858,252
  4. Step 4: Simplify right side
    2,631,180x = 3,387,858,795,288
  5. Step 5: Solve for x
    x = 3,387,858,795,288/2,631,180
  6. Step 6: Final answer
    x = 1,287,581.54

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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.