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Finding the Fourth Proportional to 667,127.25, 920,624.54 and 361,201.19

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Solution

The fourth proportional to 667,127.25, 920,624.54 and 361,201.19 is: 498,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,127.25 : 920,624.54 = 361,201.19 : x
  2. Step 2: Convert to fraction form
    667,127.25/920,624.54 = 361,201.19/x
  3. Step 3: Cross multiply
    667,127.25x = 920,624.54 × 361,201.19
  4. Step 4: Simplify right side
    667,127.25x = 332,530,672,982.07
  5. Step 5: Solve for x
    x = 332,530,672,982.07/667,127.25
  6. Step 6: Final answer
    x = 498,451.64

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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.