Home / 920,719.44-1,380,991.68-321,570

Finding the Fourth Proportional to 920,719.44, 1,380,991.68 and 321,570

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Solution

The fourth proportional to 920,719.44, 1,380,991.68 and 321,570 is: 482,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,719.44 : 1,380,991.68 = 321,570 : x
  2. Step 2: Convert to fraction form
    920,719.44/1,380,991.68 = 321,570/x
  3. Step 3: Cross multiply
    920,719.44x = 1,380,991.68 × 321,570
  4. Step 4: Simplify right side
    920,719.44x = 444,085,494,537.60
  5. Step 5: Solve for x
    x = 444,085,494,537.60/920,719.44
  6. Step 6: Final answer
    x = 482,324.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.