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Finding the Fourth Proportional to 667,118.34, 920,622.08 and 361,194.68

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Solution

The fourth proportional to 667,118.34, 920,622.08 and 361,194.68 is: 498,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,118.34 : 920,622.08 = 361,194.68 : x
  2. Step 2: Convert to fraction form
    667,118.34/920,622.08 = 361,194.68/x
  3. Step 3: Cross multiply
    667,118.34x = 920,622.08 × 361,194.68
  4. Step 4: Simplify right side
    667,118.34x = 332,523,791,177.45
  5. Step 5: Solve for x
    x = 332,523,791,177.45/667,118.34
  6. Step 6: Final answer
    x = 498,447.98

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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.