Home / 831,517.11-1,147,493.70-449,543.79

Finding the Fourth Proportional to 831,517.11, 1,147,493.70 and 449,543.79

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Solution

The fourth proportional to 831,517.11, 1,147,493.70 and 449,543.79 is: 620,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,517.11 : 1,147,493.70 = 449,543.79 : x
  2. Step 2: Convert to fraction form
    831,517.11/1,147,493.70 = 449,543.79/x
  3. Step 3: Cross multiply
    831,517.11x = 1,147,493.70 × 449,543.79
  4. Step 4: Simplify right side
    831,517.11x = 515,848,666,899.12
  5. Step 5: Solve for x
    x = 515,848,666,899.12/831,517.11
  6. Step 6: Final answer
    x = 620,370.48

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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.