Home / 685,526.82-945,517.29-443,622.78

Finding the Fourth Proportional to 685,526.82, 945,517.29 and 443,622.78

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Solution

The fourth proportional to 685,526.82, 945,517.29 and 443,622.78 is: 611,869.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,526.82 : 945,517.29 = 443,622.78 : x
  2. Step 2: Convert to fraction form
    685,526.82/945,517.29 = 443,622.78/x
  3. Step 3: Cross multiply
    685,526.82x = 945,517.29 × 443,622.78
  4. Step 4: Simplify right side
    685,526.82x = 419,453,008,727.87
  5. Step 5: Solve for x
    x = 419,453,008,727.87/685,526.82
  6. Step 6: Final answer
    x = 611,869.58

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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.