Home / 589,991.78-814,187.14-321,719.78

Finding the Fourth Proportional to 589,991.78, 814,187.14 and 321,719.78

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Solution

The fourth proportional to 589,991.78, 814,187.14 and 321,719.78 is: 443,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,991.78 : 814,187.14 = 321,719.78 : x
  2. Step 2: Convert to fraction form
    589,991.78/814,187.14 = 321,719.78/x
  3. Step 3: Cross multiply
    589,991.78x = 814,187.14 × 321,719.78
  4. Step 4: Simplify right side
    589,991.78x = 261,940,107,559.63
  5. Step 5: Solve for x
    x = 261,940,107,559.63/589,991.78
  6. Step 6: Final answer
    x = 443,972.47

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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.