Home / 421,742.20-632,613.30-403,540.60

Finding the Fourth Proportional to 421,742.20, 632,613.30 and 403,540.60

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Solution

The fourth proportional to 421,742.20, 632,613.30 and 403,540.60 is: 605,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,742.20 : 632,613.30 = 403,540.60 : x
  2. Step 2: Convert to fraction form
    421,742.20/632,613.30 = 403,540.60/x
  3. Step 3: Cross multiply
    421,742.20x = 632,613.30 × 403,540.60
  4. Step 4: Simplify right side
    421,742.20x = 255,285,150,649.98
  5. Step 5: Solve for x
    x = 255,285,150,649.98/421,742.20
  6. Step 6: Final answer
    x = 605,310.90

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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.