Home / 639,826.86-960,330.68-324,505.20

Finding the Fourth Proportional to 639,826.86, 960,330.68 and 324,505.20

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Solution

The fourth proportional to 639,826.86, 960,330.68 and 324,505.20 is: 487,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,826.86 : 960,330.68 = 324,505.20 : x
  2. Step 2: Convert to fraction form
    639,826.86/960,330.68 = 324,505.20/x
  3. Step 3: Cross multiply
    639,826.86x = 960,330.68 × 324,505.20
  4. Step 4: Simplify right side
    639,826.86x = 311,632,299,379.54
  5. Step 5: Solve for x
    x = 311,632,299,379.54/639,826.86
  6. Step 6: Final answer
    x = 487,057.23

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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.