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Finding the Fourth Proportional to 667,276.73, 920,842.37 and 361,353.44

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Solution

The fourth proportional to 667,276.73, 920,842.37 and 361,353.44 is: 498,668.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,276.73 : 920,842.37 = 361,353.44 : x
  2. Step 2: Convert to fraction form
    667,276.73/920,842.37 = 361,353.44/x
  3. Step 3: Cross multiply
    667,276.73x = 920,842.37 × 361,353.44
  4. Step 4: Simplify right side
    667,276.73x = 332,749,558,097.25
  5. Step 5: Solve for x
    x = 332,749,558,097.25/667,276.73
  6. Step 6: Final answer
    x = 498,668.01

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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.