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Finding the Fourth Proportional to 640,432.62, 960,614.28 and 324,881.34

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Solution

The fourth proportional to 640,432.62, 960,614.28 and 324,881.34 is: 487,304.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,432.62 : 960,614.28 = 324,881.34 : x
  2. Step 2: Convert to fraction form
    640,432.62/960,614.28 = 324,881.34/x
  3. Step 3: Cross multiply
    640,432.62x = 960,614.28 × 324,881.34
  4. Step 4: Simplify right side
    640,432.62x = 312,085,654,509.54
  5. Step 5: Solve for x
    x = 312,085,654,509.54/640,432.62
  6. Step 6: Final answer
    x = 487,304.43

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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.