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Finding the Fourth Proportional to 1,313,251.80, 1,811,978.82 and 796,994.26

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Solution

The fourth proportional to 1,313,251.80, 1,811,978.82 and 796,994.26 is: 1,099,664.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,251.80 : 1,811,978.82 = 796,994.26 : x
  2. Step 2: Convert to fraction form
    1,313,251.80/1,811,978.82 = 796,994.26/x
  3. Step 3: Cross multiply
    1,313,251.80x = 1,811,978.82 × 796,994.26
  4. Step 4: Simplify right side
    1,313,251.80x = 1,444,136,718,781.57
  5. Step 5: Solve for x
    x = 1,444,136,718,781.57/1,313,251.80
  6. Step 6: Final answer
    x = 1,099,664.75

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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.