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Finding the Fourth Proportional to 12,290,992.60, 18,447,642.60 and 6,229,940.80

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Solution

The fourth proportional to 12,290,992.60, 18,447,642.60 and 6,229,940.80 is: 9,350,564.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,992.60 : 18,447,642.60 = 6,229,940.80 : x
  2. Step 2: Convert to fraction form
    12,290,992.60/18,447,642.60 = 6,229,940.80/x
  3. Step 3: Cross multiply
    12,290,992.60x = 18,447,642.60 × 6,229,940.80
  4. Step 4: Simplify right side
    12,290,992.60x = 114,927,721,297,558.08
  5. Step 5: Solve for x
    x = 114,927,721,297,558.08/12,290,992.60
  6. Step 6: Final answer
    x = 9,350,564.68

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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.