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Finding the Fourth Proportional to 512,660.32, 768,321.61 and 370,982.81

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Solution

The fourth proportional to 512,660.32, 768,321.61 and 370,982.81 is: 555,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,660.32 : 768,321.61 = 370,982.81 : x
  2. Step 2: Convert to fraction form
    512,660.32/768,321.61 = 370,982.81/x
  3. Step 3: Cross multiply
    512,660.32x = 768,321.61 × 370,982.81
  4. Step 4: Simplify right side
    512,660.32x = 285,034,109,861.52
  5. Step 5: Solve for x
    x = 285,034,109,861.52/512,660.32
  6. Step 6: Final answer
    x = 555,990.19

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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.