Home / 461,749.60-691,968.30-321,344.20

Finding the Fourth Proportional to 461,749.60, 691,968.30 and 321,344.20

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Solution

The fourth proportional to 461,749.60, 691,968.30 and 321,344.20 is: 481,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,749.60 : 691,968.30 = 321,344.20 : x
  2. Step 2: Convert to fraction form
    461,749.60/691,968.30 = 321,344.20/x
  3. Step 3: Cross multiply
    461,749.60x = 691,968.30 × 321,344.20
  4. Step 4: Simplify right side
    461,749.60x = 222,359,999,788.86
  5. Step 5: Solve for x
    x = 222,359,999,788.86/461,749.60
  6. Step 6: Final answer
    x = 481,559.70

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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.