Home / 681,571.05-1,022,540.57-208,243.50

Finding the Fourth Proportional to 681,571.05, 1,022,540.57 and 208,243.50

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Solution

The fourth proportional to 681,571.05, 1,022,540.57 and 208,243.50 is: 312,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,571.05 : 1,022,540.57 = 208,243.50 : x
  2. Step 2: Convert to fraction form
    681,571.05/1,022,540.57 = 208,243.50/x
  3. Step 3: Cross multiply
    681,571.05x = 1,022,540.57 × 208,243.50
  4. Step 4: Simplify right side
    681,571.05x = 212,937,427,188.80
  5. Step 5: Solve for x
    x = 212,937,427,188.80/681,571.05
  6. Step 6: Final answer
    x = 312,421.47

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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.