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Finding the Fourth Proportional to 8,607,991.72, 11,878,644.78 and 4,934,274.04

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Solution

The fourth proportional to 8,607,991.72, 11,878,644.78 and 4,934,274.04 is: 6,809,078.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607,991.72 : 11,878,644.78 = 4,934,274.04 : x
  2. Step 2: Convert to fraction form
    8,607,991.72/11,878,644.78 = 4,934,274.04/x
  3. Step 3: Cross multiply
    8,607,991.72x = 11,878,644.78 × 4,934,274.04
  4. Step 4: Simplify right side
    8,607,991.72x = 58,612,488,568,335.51
  5. Step 5: Solve for x
    x = 58,612,488,568,335.51/8,607,991.72
  6. Step 6: Final answer
    x = 6,809,078.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.