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Finding the Fourth Proportional to 489,168.90, 732,769.20 and 329,736.60

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Solution

The fourth proportional to 489,168.90, 732,769.20 and 329,736.60 is: 493,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,168.90 : 732,769.20 = 329,736.60 : x
  2. Step 2: Convert to fraction form
    489,168.90/732,769.20 = 329,736.60/x
  3. Step 3: Cross multiply
    489,168.90x = 732,769.20 × 329,736.60
  4. Step 4: Simplify right side
    489,168.90x = 241,620,824,592.72
  5. Step 5: Solve for x
    x = 241,620,824,592.72/489,168.90
  6. Step 6: Final answer
    x = 493,941.51

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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.