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Finding the Fourth Proportional to 400,426.60, 600,462.78 and 119,891.56

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Solution

The fourth proportional to 400,426.60, 600,462.78 and 119,891.56 is: 179,784.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,426.60 : 600,462.78 = 119,891.56 : x
  2. Step 2: Convert to fraction form
    400,426.60/600,462.78 = 119,891.56/x
  3. Step 3: Cross multiply
    400,426.60x = 600,462.78 × 119,891.56
  4. Step 4: Simplify right side
    400,426.60x = 71,990,419,416.14
  5. Step 5: Solve for x
    x = 71,990,419,416.14/400,426.60
  6. Step 6: Final answer
    x = 179,784.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.