Home / 2,188,288.80-3,280,100.40-839,930.40

Finding the Fourth Proportional to 2,188,288.80, 3,280,100.40 and 839,930.40

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Solution

The fourth proportional to 2,188,288.80, 3,280,100.40 and 839,930.40 is: 1,259,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,288.80 : 3,280,100.40 = 839,930.40 : x
  2. Step 2: Convert to fraction form
    2,188,288.80/3,280,100.40 = 839,930.40/x
  3. Step 3: Cross multiply
    2,188,288.80x = 3,280,100.40 × 839,930.40
  4. Step 4: Simplify right side
    2,188,288.80x = 2,755,056,041,012.16
  5. Step 5: Solve for x
    x = 2,755,056,041,012.16/2,188,288.80
  6. Step 6: Final answer
    x = 1,259,000.20

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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.