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Finding the Fourth Proportional to 639,832.98, 960,339.87 and 324,511.32

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Solution

The fourth proportional to 639,832.98, 960,339.87 and 324,511.32 is: 487,066.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,832.98 : 960,339.87 = 324,511.32 : x
  2. Step 2: Convert to fraction form
    639,832.98/960,339.87 = 324,511.32/x
  3. Step 3: Cross multiply
    639,832.98x = 960,339.87 × 324,511.32
  4. Step 4: Simplify right side
    639,832.98x = 311,641,158,862.33
  5. Step 5: Solve for x
    x = 311,641,158,862.33/639,832.98
  6. Step 6: Final answer
    x = 487,066.42

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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.