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Finding the Fourth Proportional to 8,759,456.78, 12,000,255.64 and 8,431,965.68

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Solution

The fourth proportional to 8,759,456.78, 12,000,255.64 and 8,431,965.68 is: 11,551,600.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759,456.78 : 12,000,255.64 = 8,431,965.68 : x
  2. Step 2: Convert to fraction form
    8,759,456.78/12,000,255.64 = 8,431,965.68/x
  3. Step 3: Cross multiply
    8,759,456.78x = 12,000,255.64 × 8,431,965.68
  4. Step 4: Simplify right side
    8,759,456.78x = 101,185,743,707,706.44
  5. Step 5: Solve for x
    x = 101,185,743,707,706.44/8,759,456.78
  6. Step 6: Final answer
    x = 11,551,600.32

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.