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Finding the Fourth Proportional to 500,761.58, 691,028.43 and 274,402.22

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Solution

The fourth proportional to 500,761.58, 691,028.43 and 274,402.22 is: 378,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,761.58 : 691,028.43 = 274,402.22 : x
  2. Step 2: Convert to fraction form
    500,761.58/691,028.43 = 274,402.22/x
  3. Step 3: Cross multiply
    500,761.58x = 691,028.43 × 274,402.22
  4. Step 4: Simplify right side
    500,761.58x = 189,619,735,275.12
  5. Step 5: Solve for x
    x = 189,619,735,275.12/500,761.58
  6. Step 6: Final answer
    x = 378,662.71

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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.