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Finding the Fourth Proportional to 7,978,351.50, 11,967,527.52 and 1,994,719.50

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Solution

The fourth proportional to 7,978,351.50, 11,967,527.52 and 1,994,719.50 is: 2,992,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,351.50 : 11,967,527.52 = 1,994,719.50 : x
  2. Step 2: Convert to fraction form
    7,978,351.50/11,967,527.52 = 1,994,719.50/x
  3. Step 3: Cross multiply
    7,978,351.50x = 11,967,527.52 × 1,994,719.50
  4. Step 4: Simplify right side
    7,978,351.50x = 23,871,860,510,930.64
  5. Step 5: Solve for x
    x = 23,871,860,510,930.64/7,978,351.50
  6. Step 6: Final answer
    x = 2,992,079.32

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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.