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Finding the Fourth Proportional to 636,311.22, 878,111.76 and 349,849.44

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Solution

The fourth proportional to 636,311.22, 878,111.76 and 349,849.44 is: 482,793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,311.22 : 878,111.76 = 349,849.44 : x
  2. Step 2: Convert to fraction form
    636,311.22/878,111.76 = 349,849.44/x
  3. Step 3: Cross multiply
    636,311.22x = 878,111.76 × 349,849.44
  4. Step 4: Simplify right side
    636,311.22x = 307,206,907,493.41
  5. Step 5: Solve for x
    x = 307,206,907,493.41/636,311.22
  6. Step 6: Final answer
    x = 482,793.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.