Home / 1,108,878.20-1,659,165.30-789,767.80

Finding the Fourth Proportional to 1,108,878.20, 1,659,165.30 and 789,767.80

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Solution

The fourth proportional to 1,108,878.20, 1,659,165.30 and 789,767.80 is: 1,181,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,878.20 : 1,659,165.30 = 789,767.80 : x
  2. Step 2: Convert to fraction form
    1,108,878.20/1,659,165.30 = 789,767.80/x
  3. Step 3: Cross multiply
    1,108,878.20x = 1,659,165.30 × 789,767.80
  4. Step 4: Simplify right side
    1,108,878.20x = 1,310,355,328,817.34
  5. Step 5: Solve for x
    x = 1,310,355,328,817.34/1,108,878.20
  6. Step 6: Final answer
    x = 1,181,694.55

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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.