Home / 812,558.16-1,121,333.40-449,974.08

Finding the Fourth Proportional to 812,558.16, 1,121,333.40 and 449,974.08

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Solution

The fourth proportional to 812,558.16, 1,121,333.40 and 449,974.08 is: 620,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,558.16 : 1,121,333.40 = 449,974.08 : x
  2. Step 2: Convert to fraction form
    812,558.16/1,121,333.40 = 449,974.08/x
  3. Step 3: Cross multiply
    812,558.16x = 1,121,333.40 × 449,974.08
  4. Step 4: Simplify right side
    812,558.16x = 504,570,965,038.27
  5. Step 5: Solve for x
    x = 504,570,965,038.27/812,558.16
  6. Step 6: Final answer
    x = 620,965.97

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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.