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Finding the Fourth Proportional to 654,682.60, 982,023.90 and 211,450.60

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Solution

The fourth proportional to 654,682.60, 982,023.90 and 211,450.60 is: 317,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,682.60 : 982,023.90 = 211,450.60 : x
  2. Step 2: Convert to fraction form
    654,682.60/982,023.90 = 211,450.60/x
  3. Step 3: Cross multiply
    654,682.60x = 982,023.90 × 211,450.60
  4. Step 4: Simplify right side
    654,682.60x = 207,649,542,869.34
  5. Step 5: Solve for x
    x = 207,649,542,869.34/654,682.60
  6. Step 6: Final answer
    x = 317,175.90

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Double scale
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Similar ratio
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1.5x scale

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.