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Finding the Fourth Proportional to 454,984.40, 682,476.60 and 313,266.80

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Solution

The fourth proportional to 454,984.40, 682,476.60 and 313,266.80 is: 469,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,984.40 : 682,476.60 = 313,266.80 : x
  2. Step 2: Convert to fraction form
    454,984.40/682,476.60 = 313,266.80/x
  3. Step 3: Cross multiply
    454,984.40x = 682,476.60 × 313,266.80
  4. Step 4: Simplify right side
    454,984.40x = 213,797,260,556.88
  5. Step 5: Solve for x
    x = 213,797,260,556.88/454,984.40
  6. Step 6: Final answer
    x = 469,900.20

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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.