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Finding the Fourth Proportional to 667,242.30, 920,794.80 and 361,321.10

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Solution

The fourth proportional to 667,242.30, 920,794.80 and 361,321.10 is: 498,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,242.30 : 920,794.80 = 361,321.10 : x
  2. Step 2: Convert to fraction form
    667,242.30/920,794.80 = 361,321.10/x
  3. Step 3: Cross multiply
    667,242.30x = 920,794.80 × 361,321.10
  4. Step 4: Simplify right side
    667,242.30x = 332,702,590,010.28
  5. Step 5: Solve for x
    x = 332,702,590,010.28/667,242.30
  6. Step 6: Final answer
    x = 498,623.35

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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.