Home / 1,202,719.12-1,659,361.86-820,081.60

Finding the Fourth Proportional to 1,202,719.12, 1,659,361.86 and 820,081.60

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Solution

The fourth proportional to 1,202,719.12, 1,659,361.86 and 820,081.60 is: 1,131,446.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,719.12 : 1,659,361.86 = 820,081.60 : x
  2. Step 2: Convert to fraction form
    1,202,719.12/1,659,361.86 = 820,081.60/x
  3. Step 3: Cross multiply
    1,202,719.12x = 1,659,361.86 × 820,081.60
  4. Step 4: Simplify right side
    1,202,719.12x = 1,360,812,129,127.78
  5. Step 5: Solve for x
    x = 1,360,812,129,127.78/1,202,719.12
  6. Step 6: Final answer
    x = 1,131,446.33

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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.