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Finding the Fourth Proportional to 636,311.25, 878,115.24 and 345,923.42

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Solution

The fourth proportional to 636,311.25, 878,115.24 and 345,923.42 is: 477,377.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,311.25 : 878,115.24 = 345,923.42 : x
  2. Step 2: Convert to fraction form
    636,311.25/878,115.24 = 345,923.42/x
  3. Step 3: Cross multiply
    636,311.25x = 878,115.24 × 345,923.42
  4. Step 4: Simplify right side
    636,311.25x = 303,760,622,584.35
  5. Step 5: Solve for x
    x = 303,760,622,584.35/636,311.25
  6. Step 6: Final answer
    x = 477,377.42

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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.