Home / 645,910.20-967,115.70-505,942.20

Finding the Fourth Proportional to 645,910.20, 967,115.70 and 505,942.20

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Solution

The fourth proportional to 645,910.20, 967,115.70 and 505,942.20 is: 757,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,910.20 : 967,115.70 = 505,942.20 : x
  2. Step 2: Convert to fraction form
    645,910.20/967,115.70 = 505,942.20/x
  3. Step 3: Cross multiply
    645,910.20x = 967,115.70 × 505,942.20
  4. Step 4: Simplify right side
    645,910.20x = 489,304,644,912.54
  5. Step 5: Solve for x
    x = 489,304,644,912.54/645,910.20
  6. Step 6: Final answer
    x = 757,542.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.