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Finding the Fourth Proportional to 640,051.22, 960,679.48 and 324,734.42

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Solution

The fourth proportional to 640,051.22, 960,679.48 and 324,734.42 is: 487,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,051.22 : 960,679.48 = 324,734.42 : x
  2. Step 2: Convert to fraction form
    640,051.22/960,679.48 = 324,734.42/x
  3. Step 3: Cross multiply
    640,051.22x = 960,679.48 × 324,734.42
  4. Step 4: Simplify right side
    640,051.22x = 311,965,693,743.70
  5. Step 5: Solve for x
    x = 311,965,693,743.70/640,051.22
  6. Step 6: Final answer
    x = 487,407.39

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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.