Home / 812,181.05-1,120,818.72-449,610.97

Finding the Fourth Proportional to 812,181.05, 1,120,818.72 and 449,610.97

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Solution

The fourth proportional to 812,181.05, 1,120,818.72 and 449,610.97 is: 620,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,181.05 : 1,120,818.72 = 449,610.97 : x
  2. Step 2: Convert to fraction form
    812,181.05/1,120,818.72 = 449,610.97/x
  3. Step 3: Cross multiply
    812,181.05x = 1,120,818.72 × 449,610.97
  4. Step 4: Simplify right side
    812,181.05x = 503,932,391,616.36
  5. Step 5: Solve for x
    x = 503,932,391,616.36/812,181.05
  6. Step 6: Final answer
    x = 620,468.05

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1.5x scale

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.