Home / 2,919,321.80-4,378,982.70-2,116,838.60

Finding the Fourth Proportional to 2,919,321.80, 4,378,982.70 and 2,116,838.60

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Solution

The fourth proportional to 2,919,321.80, 4,378,982.70 and 2,116,838.60 is: 3,175,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919,321.80 : 4,378,982.70 = 2,116,838.60 : x
  2. Step 2: Convert to fraction form
    2,919,321.80/4,378,982.70 = 2,116,838.60/x
  3. Step 3: Cross multiply
    2,919,321.80x = 4,378,982.70 × 2,116,838.60
  4. Step 4: Simplify right side
    2,919,321.80x = 9,269,599,608,092.22
  5. Step 5: Solve for x
    x = 9,269,599,608,092.22/2,919,321.80
  6. Step 6: Final answer
    x = 3,175,257.90

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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.