Home / 7,989,080.40-11,983,620.60-6,660,477.90

Finding the Fourth Proportional to 7,989,080.40, 11,983,620.60 and 6,660,477.90

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Solution

The fourth proportional to 7,989,080.40, 11,983,620.60 and 6,660,477.90 is: 9,990,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989,080.40 : 11,983,620.60 = 6,660,477.90 : x
  2. Step 2: Convert to fraction form
    7,989,080.40/11,983,620.60 = 6,660,477.90/x
  3. Step 3: Cross multiply
    7,989,080.40x = 11,983,620.60 × 6,660,477.90
  4. Step 4: Simplify right side
    7,989,080.40x = 79,816,640,168,284.73
  5. Step 5: Solve for x
    x = 79,816,640,168,284.73/7,989,080.40
  6. Step 6: Final answer
    x = 9,990,716.85

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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.