Home / 853,724.43-1,280,636.73-321,250.05

Finding the Fourth Proportional to 853,724.43, 1,280,636.73 and 321,250.05

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Solution

The fourth proportional to 853,724.43, 1,280,636.73 and 321,250.05 is: 481,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,724.43 : 1,280,636.73 = 321,250.05 : x
  2. Step 2: Convert to fraction form
    853,724.43/1,280,636.73 = 321,250.05/x
  3. Step 3: Cross multiply
    853,724.43x = 1,280,636.73 × 321,250.05
  4. Step 4: Simplify right side
    853,724.43x = 411,404,613,544.34
  5. Step 5: Solve for x
    x = 411,404,613,544.34/853,724.43
  6. Step 6: Final answer
    x = 481,893.92

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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.