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Finding the Fourth Proportional to 493,771.92, 681,132.38 and 401,989.96

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Solution

The fourth proportional to 493,771.92, 681,132.38 and 401,989.96 is: 554,524.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,771.92 : 681,132.38 = 401,989.96 : x
  2. Step 2: Convert to fraction form
    493,771.92/681,132.38 = 401,989.96/x
  3. Step 3: Cross multiply
    493,771.92x = 681,132.38 × 401,989.96
  4. Step 4: Simplify right side
    493,771.92x = 273,808,378,190.91
  5. Step 5: Solve for x
    x = 273,808,378,190.91/493,771.92
  6. Step 6: Final answer
    x = 554,524.00

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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.