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Finding the Fourth Proportional to 667,237.45, 920,789.54 and 361,317.43

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Solution

The fourth proportional to 667,237.45, 920,789.54 and 361,317.43 is: 498,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,237.45 : 920,789.54 = 361,317.43 : x
  2. Step 2: Convert to fraction form
    667,237.45/920,789.54 = 361,317.43/x
  3. Step 3: Cross multiply
    667,237.45x = 920,789.54 × 361,317.43
  4. Step 4: Simplify right side
    667,237.45x = 332,697,310,163.68
  5. Step 5: Solve for x
    x = 332,697,310,163.68/667,237.45
  6. Step 6: Final answer
    x = 498,619.06

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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.