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Finding the Fourth Proportional to 813,680.96, 1,220,533.12 and 252,680

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Solution

The fourth proportional to 813,680.96, 1,220,533.12 and 252,680 is: 379,023.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,680.96 : 1,220,533.12 = 252,680 : x
  2. Step 2: Convert to fraction form
    813,680.96/1,220,533.12 = 252,680/x
  3. Step 3: Cross multiply
    813,680.96x = 1,220,533.12 × 252,680
  4. Step 4: Simplify right side
    813,680.96x = 308,404,308,761.60
  5. Step 5: Solve for x
    x = 308,404,308,761.60/813,680.96
  6. Step 6: Final answer
    x = 379,023.63

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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.