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Finding the Fourth Proportional to 800,358.05, 1,200,539.10 and 327,043.32

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Solution

The fourth proportional to 800,358.05, 1,200,539.10 and 327,043.32 is: 490,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,358.05 : 1,200,539.10 = 327,043.32 : x
  2. Step 2: Convert to fraction form
    800,358.05/1,200,539.10 = 327,043.32/x
  3. Step 3: Cross multiply
    800,358.05x = 1,200,539.10 × 327,043.32
  4. Step 4: Simplify right side
    800,358.05x = 392,628,293,053.81
  5. Step 5: Solve for x
    x = 392,628,293,053.81/800,358.05
  6. Step 6: Final answer
    x = 490,565.81

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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.