Home / 831,680.70-1,245,771.45-691,712.70

Finding the Fourth Proportional to 831,680.70, 1,245,771.45 and 691,712.70

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Solution

The fourth proportional to 831,680.70, 1,245,771.45 and 691,712.70 is: 1,036,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,680.70 : 1,245,771.45 = 691,712.70 : x
  2. Step 2: Convert to fraction form
    831,680.70/1,245,771.45 = 691,712.70/x
  3. Step 3: Cross multiply
    831,680.70x = 1,245,771.45 × 691,712.70
  4. Step 4: Simplify right side
    831,680.70x = 861,715,933,262.42
  5. Step 5: Solve for x
    x = 861,715,933,262.42/831,680.70
  6. Step 6: Final answer
    x = 1,036,113.90

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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.