Home / 2,120,487.69-3,180,716.55-858,297.09

Finding the Fourth Proportional to 2,120,487.69, 3,180,716.55 and 858,297.09

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Solution

The fourth proportional to 2,120,487.69, 3,180,716.55 and 858,297.09 is: 1,287,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,487.69 : 3,180,716.55 = 858,297.09 : x
  2. Step 2: Convert to fraction form
    2,120,487.69/3,180,716.55 = 858,297.09/x
  3. Step 3: Cross multiply
    2,120,487.69x = 3,180,716.55 × 858,297.09
  4. Step 4: Simplify right side
    2,120,487.69x = 2,729,999,758,979.84
  5. Step 5: Solve for x
    x = 2,729,999,758,979.84/2,120,487.69
  6. Step 6: Final answer
    x = 1,287,439.57

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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.