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Finding the Fourth Proportional to 636,296.46, 878,094.15 and 345,907.97

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Solution

The fourth proportional to 636,296.46, 878,094.15 and 345,907.97 is: 477,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,296.46 : 878,094.15 = 345,907.97 : x
  2. Step 2: Convert to fraction form
    636,296.46/878,094.15 = 345,907.97/x
  3. Step 3: Cross multiply
    636,296.46x = 878,094.15 × 345,907.97
  4. Step 4: Simplify right side
    636,296.46x = 303,739,760,504.91
  5. Step 5: Solve for x
    x = 303,739,760,504.91/636,296.46
  6. Step 6: Final answer
    x = 477,355.73

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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.