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Finding the Fourth Proportional to 641,632.56, 961,907.60 and 404,452.48

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Solution

The fourth proportional to 641,632.56, 961,907.60 and 404,452.48 is: 606,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,632.56 : 961,907.60 = 404,452.48 : x
  2. Step 2: Convert to fraction form
    641,632.56/961,907.60 = 404,452.48/x
  3. Step 3: Cross multiply
    641,632.56x = 961,907.60 × 404,452.48
  4. Step 4: Simplify right side
    641,632.56x = 389,045,914,350.85
  5. Step 5: Solve for x
    x = 389,045,914,350.85/641,632.56
  6. Step 6: Final answer
    x = 606,337.55

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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.