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Finding the Fourth Proportional to 8,682,708, 11,982,137.04 and 4,815,821.28

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Solution

The fourth proportional to 8,682,708, 11,982,137.04 and 4,815,821.28 is: 6,645,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682,708 : 11,982,137.04 = 4,815,821.28 : x
  2. Step 2: Convert to fraction form
    8,682,708/11,982,137.04 = 4,815,821.28/x
  3. Step 3: Cross multiply
    8,682,708x = 11,982,137.04 × 4,815,821.28
  4. Step 4: Simplify right side
    8,682,708x = 57,703,830,537,108.21
  5. Step 5: Solve for x
    x = 57,703,830,537,108.21/8,682,708
  6. Step 6: Final answer
    x = 6,645,833.37

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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.