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Finding the Fourth Proportional to 1,261,899.92, 1,741,621.83 and 802,535.56

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Solution

The fourth proportional to 1,261,899.92, 1,741,621.83 and 802,535.56 is: 1,107,626.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,899.92 : 1,741,621.83 = 802,535.56 : x
  2. Step 2: Convert to fraction form
    1,261,899.92/1,741,621.83 = 802,535.56/x
  3. Step 3: Cross multiply
    1,261,899.92x = 1,741,621.83 × 802,535.56
  4. Step 4: Simplify right side
    1,261,899.92x = 1,397,713,450,647.27
  5. Step 5: Solve for x
    x = 1,397,713,450,647.27/1,261,899.92
  6. Step 6: Final answer
    x = 1,107,626.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.