Home / 515,286.09-711,099.07-285,858.38

Finding the Fourth Proportional to 515,286.09, 711,099.07 and 285,858.38

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Solution

The fourth proportional to 515,286.09, 711,099.07 and 285,858.38 is: 394,486.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,286.09 : 711,099.07 = 285,858.38 : x
  2. Step 2: Convert to fraction form
    515,286.09/711,099.07 = 285,858.38/x
  3. Step 3: Cross multiply
    515,286.09x = 711,099.07 × 285,858.38
  4. Step 4: Simplify right side
    515,286.09x = 203,273,629,232.81
  5. Step 5: Solve for x
    x = 203,273,629,232.81/515,286.09
  6. Step 6: Final answer
    x = 394,486.93

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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.