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Finding the Fourth Proportional to 636,467.44, 878,295 and 349,999.60

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Solution

The fourth proportional to 636,467.44, 878,295 and 349,999.60 is: 482,982.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,467.44 : 878,295 = 349,999.60 : x
  2. Step 2: Convert to fraction form
    636,467.44/878,295 = 349,999.60/x
  3. Step 3: Cross multiply
    636,467.44x = 878,295 × 349,999.60
  4. Step 4: Simplify right side
    636,467.44x = 307,402,898,682
  5. Step 5: Solve for x
    x = 307,402,898,682/636,467.44
  6. Step 6: Final answer
    x = 482,982.91

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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.