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Finding the Fourth Proportional to 3,821,018.92, 5,731,586.71 and 981,068.20

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Solution

The fourth proportional to 3,821,018.92, 5,731,586.71 and 981,068.20 is: 1,471,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821,018.92 : 5,731,586.71 = 981,068.20 : x
  2. Step 2: Convert to fraction form
    3,821,018.92/5,731,586.71 = 981,068.20/x
  3. Step 3: Cross multiply
    3,821,018.92x = 5,731,586.71 × 981,068.20
  4. Step 4: Simplify right side
    3,821,018.92x = 5,623,077,439,941.98
  5. Step 5: Solve for x
    x = 5,623,077,439,941.98/3,821,018.92
  6. Step 6: Final answer
    x = 1,471,617.27

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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.