Home / 1,290,120.80-1,933,568.40-659,285.60

Finding the Fourth Proportional to 1,290,120.80, 1,933,568.40 and 659,285.60

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Solution

The fourth proportional to 1,290,120.80, 1,933,568.40 and 659,285.60 is: 988,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,120.80 : 1,933,568.40 = 659,285.60 : x
  2. Step 2: Convert to fraction form
    1,290,120.80/1,933,568.40 = 659,285.60/x
  3. Step 3: Cross multiply
    1,290,120.80x = 1,933,568.40 × 659,285.60
  4. Step 4: Simplify right side
    1,290,120.80x = 1,274,773,802,735.04
  5. Step 5: Solve for x
    x = 1,274,773,802,735.04/1,290,120.80
  6. Step 6: Final answer
    x = 988,104.22

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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.