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Finding the Fourth Proportional to 667,051.56, 920,524.56 and 361,119.86

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Solution

The fourth proportional to 667,051.56, 920,524.56 and 361,119.86 is: 498,341.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,051.56 : 920,524.56 = 361,119.86 : x
  2. Step 2: Convert to fraction form
    667,051.56/920,524.56 = 361,119.86/x
  3. Step 3: Cross multiply
    667,051.56x = 920,524.56 × 361,119.86
  4. Step 4: Simplify right side
    667,051.56x = 332,419,700,233.76
  5. Step 5: Solve for x
    x = 332,419,700,233.76/667,051.56
  6. Step 6: Final answer
    x = 498,341.84

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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.