Home / 1,998,800.80-2,998,016.88-669,116.32

Finding the Fourth Proportional to 1,998,800.80, 2,998,016.88 and 669,116.32

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Solution

The fourth proportional to 1,998,800.80, 2,998,016.88 and 669,116.32 is: 1,003,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,800.80 : 2,998,016.88 = 669,116.32 : x
  2. Step 2: Convert to fraction form
    1,998,800.80/2,998,016.88 = 669,116.32/x
  3. Step 3: Cross multiply
    1,998,800.80x = 2,998,016.88 × 669,116.32
  4. Step 4: Simplify right side
    1,998,800.80x = 2,006,022,022,043.48
  5. Step 5: Solve for x
    x = 2,006,022,022,043.48/1,998,800.80
  6. Step 6: Final answer
    x = 1,003,612.78

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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.