Home / 812,720.07-1,121,541.35-445,194.27

Finding the Fourth Proportional to 812,720.07, 1,121,541.35 and 445,194.27

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Solution

The fourth proportional to 812,720.07, 1,121,541.35 and 445,194.27 is: 614,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,720.07 : 1,121,541.35 = 445,194.27 : x
  2. Step 2: Convert to fraction form
    812,720.07/1,121,541.35 = 445,194.27/x
  3. Step 3: Cross multiply
    812,720.07x = 1,121,541.35 × 445,194.27
  4. Step 4: Simplify right side
    812,720.07x = 499,303,780,362.09
  5. Step 5: Solve for x
    x = 499,303,780,362.09/812,720.07
  6. Step 6: Final answer
    x = 614,361.33

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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.