Home / 812,495.44-1,121,229.93-449,911.54

Finding the Fourth Proportional to 812,495.44, 1,121,229.93 and 449,911.54

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Solution

The fourth proportional to 812,495.44, 1,121,229.93 and 449,911.54 is: 620,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,495.44 : 1,121,229.93 = 449,911.54 : x
  2. Step 2: Convert to fraction form
    812,495.44/1,121,229.93 = 449,911.54/x
  3. Step 3: Cross multiply
    812,495.44x = 1,121,229.93 × 449,911.54
  4. Step 4: Simplify right side
    812,495.44x = 504,454,284,500.39
  5. Step 5: Solve for x
    x = 504,454,284,500.39/812,495.44
  6. Step 6: Final answer
    x = 620,870.30

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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.