Home / 639,455.31-959,183.10-324,002.43

Finding the Fourth Proportional to 639,455.31, 959,183.10 and 324,002.43

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Solution

The fourth proportional to 639,455.31, 959,183.10 and 324,002.43 is: 486,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,455.31 : 959,183.10 = 324,002.43 : x
  2. Step 2: Convert to fraction form
    639,455.31/959,183.10 = 324,002.43/x
  3. Step 3: Cross multiply
    639,455.31x = 959,183.10 × 324,002.43
  4. Step 4: Simplify right side
    639,455.31x = 310,777,655,214.93
  5. Step 5: Solve for x
    x = 310,777,655,214.93/639,455.31
  6. Step 6: Final answer
    x = 486,003.71

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Double scale
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Similar ratio
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1.5x scale

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.