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Finding the Fourth Proportional to 3,981,722, 5,972,604.96 and 989,906

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Solution

The fourth proportional to 3,981,722, 5,972,604.96 and 989,906 is: 1,484,864.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,722 : 5,972,604.96 = 989,906 : x
  2. Step 2: Convert to fraction form
    3,981,722/5,972,604.96 = 989,906/x
  3. Step 3: Cross multiply
    3,981,722x = 5,972,604.96 × 989,906
  4. Step 4: Simplify right side
    3,981,722x = 5,912,317,485,533.76
  5. Step 5: Solve for x
    x = 5,912,317,485,533.76/3,981,722
  6. Step 6: Final answer
    x = 1,484,864.46

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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.