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Finding the Fourth Proportional to 682,625.88, 941,989.50 and 380,761.56

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Solution

The fourth proportional to 682,625.88, 941,989.50 and 380,761.56 is: 525,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,625.88 : 941,989.50 = 380,761.56 : x
  2. Step 2: Convert to fraction form
    682,625.88/941,989.50 = 380,761.56/x
  3. Step 3: Cross multiply
    682,625.88x = 941,989.50 × 380,761.56
  4. Step 4: Simplify right side
    682,625.88x = 358,673,391,523.62
  5. Step 5: Solve for x
    x = 358,673,391,523.62/682,625.88
  6. Step 6: Final answer
    x = 525,431.87

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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.