Home / 853,716.61-1,280,625.03-321,242.25

Finding the Fourth Proportional to 853,716.61, 1,280,625.03 and 321,242.25

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Solution

The fourth proportional to 853,716.61, 1,280,625.03 and 321,242.25 is: 481,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,716.61 : 1,280,625.03 = 321,242.25 : x
  2. Step 2: Convert to fraction form
    853,716.61/1,280,625.03 = 321,242.25/x
  3. Step 3: Cross multiply
    853,716.61x = 1,280,625.03 × 321,242.25
  4. Step 4: Simplify right side
    853,716.61x = 411,390,866,043.52
  5. Step 5: Solve for x
    x = 411,390,866,043.52/853,716.61
  6. Step 6: Final answer
    x = 481,882.23

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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.