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Finding the Fourth Proportional to 3,981,409.92, 5,972,119.56 and 989,593.92

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Solution

The fourth proportional to 3,981,409.92, 5,972,119.56 and 989,593.92 is: 1,484,392.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,409.92 : 5,972,119.56 = 989,593.92 : x
  2. Step 2: Convert to fraction form
    3,981,409.92/5,972,119.56 = 989,593.92/x
  3. Step 3: Cross multiply
    3,981,409.92x = 5,972,119.56 × 989,593.92
  4. Step 4: Simplify right side
    3,981,409.92x = 5,909,973,206,089.08
  5. Step 5: Solve for x
    x = 5,909,973,206,089.08/3,981,409.92
  6. Step 6: Final answer
    x = 1,484,392.04

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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.