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Finding the Fourth Proportional to 667,372.26, 920,969.01 and 361,441.74

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Solution

The fourth proportional to 667,372.26, 920,969.01 and 361,441.74 is: 498,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,372.26 : 920,969.01 = 361,441.74 : x
  2. Step 2: Convert to fraction form
    667,372.26/920,969.01 = 361,441.74/x
  3. Step 3: Cross multiply
    667,372.26x = 920,969.01 × 361,441.74
  4. Step 4: Simplify right side
    667,372.26x = 332,876,641,460.48
  5. Step 5: Solve for x
    x = 332,876,641,460.48/667,372.26
  6. Step 6: Final answer
    x = 498,787.05

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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.