Home / 853,478.42-1,280,408.29-321,004.07

Finding the Fourth Proportional to 853,478.42, 1,280,408.29 and 321,004.07

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Solution

The fourth proportional to 853,478.42, 1,280,408.29 and 321,004.07 is: 481,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,478.42 : 1,280,408.29 = 321,004.07 : x
  2. Step 2: Convert to fraction form
    853,478.42/1,280,408.29 = 321,004.07/x
  3. Step 3: Cross multiply
    853,478.42x = 1,280,408.29 × 321,004.07
  4. Step 4: Simplify right side
    853,478.42x = 411,016,265,147.19
  5. Step 5: Solve for x
    x = 411,016,265,147.19/853,478.42
  6. Step 6: Final answer
    x = 481,577.80

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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.