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Finding the Third Proportional to 7,881,978 and 11,879,344

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Solution

The third proportional to 7,881,978 and 11,879,344 is: 17,903,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,978 : 11,879,344 = 11,879,344 : x
  2. Step 2: Convert to fraction form
    7,881,978/11,879,344 = 11,879,344/x
  3. Step 3: Cross multiply
    7,881,978x = 11,879,344 × 11,879,344
  4. Step 4: Simplify right side
    7,881,978x = 141,118,813,870,336
  5. Step 5: Solve for x
    x = 141,118,813,870,336/7,881,978
  6. Step 6: Final answer
    x = 17,903,984.74

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.