Home / 812,404.84-1,121,078.82-449,818.60

Finding the Fourth Proportional to 812,404.84, 1,121,078.82 and 449,818.60

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Solution

The fourth proportional to 812,404.84, 1,121,078.82 and 449,818.60 is: 620,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,404.84 : 1,121,078.82 = 449,818.60 : x
  2. Step 2: Convert to fraction form
    812,404.84/1,121,078.82 = 449,818.60/x
  3. Step 3: Cross multiply
    812,404.84x = 1,121,078.82 × 449,818.60
  4. Step 4: Simplify right side
    812,404.84x = 504,282,105,302.05
  5. Step 5: Solve for x
    x = 504,282,105,302.05/812,404.84
  6. Step 6: Final answer
    x = 620,727.60

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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.