Home / 821,728.72-1,133,921.06-454,190.41

Finding the Fourth Proportional to 821,728.72, 1,133,921.06 and 454,190.41

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Solution

The fourth proportional to 821,728.72, 1,133,921.06 and 454,190.41 is: 626,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,728.72 : 1,133,921.06 = 454,190.41 : x
  2. Step 2: Convert to fraction form
    821,728.72/1,133,921.06 = 454,190.41/x
  3. Step 3: Cross multiply
    821,728.72x = 1,133,921.06 × 454,190.41
  4. Step 4: Simplify right side
    821,728.72x = 515,016,071,149.04
  5. Step 5: Solve for x
    x = 515,016,071,149.04/821,728.72
  6. Step 6: Final answer
    x = 626,747.07

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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.