Home / 812,433.38-1,121,067.50-449,766.41

Finding the Fourth Proportional to 812,433.38, 1,121,067.50 and 449,766.41

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Solution

The fourth proportional to 812,433.38, 1,121,067.50 and 449,766.41 is: 620,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,433.38 : 1,121,067.50 = 449,766.41 : x
  2. Step 2: Convert to fraction form
    812,433.38/1,121,067.50 = 449,766.41/x
  3. Step 3: Cross multiply
    812,433.38x = 1,121,067.50 × 449,766.41
  4. Step 4: Simplify right side
    812,433.38x = 504,218,496,988.51
  5. Step 5: Solve for x
    x = 504,218,496,988.51/812,433.38
  6. Step 6: Final answer
    x = 620,627.50

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Double scale
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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.