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Finding the Third Proportional to 4,990,396.50 and 7,578,987.75

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Solution

The third proportional to 4,990,396.50 and 7,578,987.75 is: 11,510,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990,396.50 : 7,578,987.75 = 7,578,987.75 : x
  2. Step 2: Convert to fraction form
    4,990,396.50/7,578,987.75 = 7,578,987.75/x
  3. Step 3: Cross multiply
    4,990,396.50x = 7,578,987.75 × 7,578,987.75
  4. Step 4: Simplify right side
    4,990,396.50x = 57,441,055,314,650.06
  5. Step 5: Solve for x
    x = 57,441,055,314,650.06/4,990,396.50
  6. Step 6: Final answer
    x = 11,510,318.93

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.