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Finding the Fourth Proportional to 7,978,368.38, 11,967,552.83 and 1,994,736.38

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Solution

The fourth proportional to 7,978,368.38, 11,967,552.83 and 1,994,736.38 is: 2,992,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,368.38 : 11,967,552.83 = 1,994,736.38 : x
  2. Step 2: Convert to fraction form
    7,978,368.38/11,967,552.83 = 1,994,736.38/x
  3. Step 3: Cross multiply
    7,978,368.38x = 11,967,552.83 × 1,994,736.38
  4. Step 4: Simplify right side
    7,978,368.38x = 23,872,112,954,722.03
  5. Step 5: Solve for x
    x = 23,872,112,954,722.03/7,978,368.38
  6. Step 6: Final answer
    x = 2,992,104.63

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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.