Home / 928,997.30-1,393,161.82-321,620.69

Finding the Fourth Proportional to 928,997.30, 1,393,161.82 and 321,620.69

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Solution

The fourth proportional to 928,997.30, 1,393,161.82 and 321,620.69 is: 482,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,997.30 : 1,393,161.82 = 321,620.69 : x
  2. Step 2: Convert to fraction form
    928,997.30/1,393,161.82 = 321,620.69/x
  3. Step 3: Cross multiply
    928,997.30x = 1,393,161.82 × 321,620.69
  4. Step 4: Simplify right side
    928,997.30x = 448,069,669,714.99
  5. Step 5: Solve for x
    x = 448,069,669,714.99/928,997.30
  6. Step 6: Final answer
    x = 482,315.36

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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.