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Finding the Fourth Proportional to 636,255.43, 878,049.26 and 349,782.73

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Solution

The fourth proportional to 636,255.43, 878,049.26 and 349,782.73 is: 482,709.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,255.43 : 878,049.26 = 349,782.73 : x
  2. Step 2: Convert to fraction form
    636,255.43/878,049.26 = 349,782.73/x
  3. Step 3: Cross multiply
    636,255.43x = 878,049.26 × 349,782.73
  4. Step 4: Simplify right side
    636,255.43x = 307,126,467,237.28
  5. Step 5: Solve for x
    x = 307,126,467,237.28/636,255.43
  6. Step 6: Final answer
    x = 482,709.38

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Double scale
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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.