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Finding the Fourth Proportional to 980,657.10, 1,470,956.37 and 270,728.46

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Solution

The fourth proportional to 980,657.10, 1,470,956.37 and 270,728.46 is: 406,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,657.10 : 1,470,956.37 = 270,728.46 : x
  2. Step 2: Convert to fraction form
    980,657.10/1,470,956.37 = 270,728.46/x
  3. Step 3: Cross multiply
    980,657.10x = 1,470,956.37 × 270,728.46
  4. Step 4: Simplify right side
    980,657.10x = 398,229,752,777.29
  5. Step 5: Solve for x
    x = 398,229,752,777.29/980,657.10
  6. Step 6: Final answer
    x = 406,084.61

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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.