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Finding the Fourth Proportional to 11,915,999.40, 17,873,999.10 and 3,937,823.40

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Solution

The fourth proportional to 11,915,999.40, 17,873,999.10 and 3,937,823.40 is: 5,906,735.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915,999.40 : 17,873,999.10 = 3,937,823.40 : x
  2. Step 2: Convert to fraction form
    11,915,999.40/17,873,999.10 = 3,937,823.40/x
  3. Step 3: Cross multiply
    11,915,999.40x = 17,873,999.10 × 3,937,823.40
  4. Step 4: Simplify right side
    11,915,999.40x = 70,384,651,907,558.94
  5. Step 5: Solve for x
    x = 70,384,651,907,558.94/11,915,999.40
  6. Step 6: Final answer
    x = 5,906,735.10

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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.