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Finding the Fourth Proportional to 627,981.60, 941,680.80 and 272,812.80

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Solution

The fourth proportional to 627,981.60, 941,680.80 and 272,812.80 is: 409,092.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,981.60 : 941,680.80 = 272,812.80 : x
  2. Step 2: Convert to fraction form
    627,981.60/941,680.80 = 272,812.80/x
  3. Step 3: Cross multiply
    627,981.60x = 941,680.80 × 272,812.80
  4. Step 4: Simplify right side
    627,981.60x = 256,902,575,754.24
  5. Step 5: Solve for x
    x = 256,902,575,754.24/627,981.60
  6. Step 6: Final answer
    x = 409,092.52

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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.