Home / 853,806.20-1,281,575.91-427,647.38

Finding the Fourth Proportional to 853,806.20, 1,281,575.91 and 427,647.38

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Solution

The fourth proportional to 853,806.20, 1,281,575.91 and 427,647.38 is: 641,905.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,806.20 : 1,281,575.91 = 427,647.38 : x
  2. Step 2: Convert to fraction form
    853,806.20/1,281,575.91 = 427,647.38/x
  3. Step 3: Cross multiply
    853,806.20x = 1,281,575.91 × 427,647.38
  4. Step 4: Simplify right side
    853,806.20x = 548,062,580,182.62
  5. Step 5: Solve for x
    x = 548,062,580,182.62/853,806.20
  6. Step 6: Final answer
    x = 641,905.13

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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.