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Finding the Fourth Proportional to 12,659,608.60, 18,989,413.13 and 3,074,922.54

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Solution

The fourth proportional to 12,659,608.60, 18,989,413.13 and 3,074,922.54 is: 4,612,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659,608.60 : 18,989,413.13 = 3,074,922.54 : x
  2. Step 2: Convert to fraction form
    12,659,608.60/18,989,413.13 = 3,074,922.54/x
  3. Step 3: Cross multiply
    12,659,608.60x = 18,989,413.13 × 3,074,922.54
  4. Step 4: Simplify right side
    12,659,608.60x = 58,390,974,462,496.26
  5. Step 5: Solve for x
    x = 58,390,974,462,496.26/12,659,608.60
  6. Step 6: Final answer
    x = 4,612,383.87

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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.