Home / 853,744.92-1,280,667.42-321,270.54

Finding the Fourth Proportional to 853,744.92, 1,280,667.42 and 321,270.54

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Solution

The fourth proportional to 853,744.92, 1,280,667.42 and 321,270.54 is: 481,924.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,744.92 : 1,280,667.42 = 321,270.54 : x
  2. Step 2: Convert to fraction form
    853,744.92/1,280,667.42 = 321,270.54/x
  3. Step 3: Cross multiply
    853,744.92x = 1,280,667.42 × 321,270.54
  4. Step 4: Simplify right side
    853,744.92x = 411,440,713,583.81
  5. Step 5: Solve for x
    x = 411,440,713,583.81/853,744.92
  6. Step 6: Final answer
    x = 481,924.64

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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.