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Finding the Third Proportional to 3,913,435.27 and 8,521,618.92

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Solution

The third proportional to 3,913,435.27 and 8,521,618.92 is: 18,556,072.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913,435.27 : 8,521,618.92 = 8,521,618.92 : x
  2. Step 2: Convert to fraction form
    3,913,435.27/8,521,618.92 = 8,521,618.92/x
  3. Step 3: Cross multiply
    3,913,435.27x = 8,521,618.92 × 8,521,618.92
  4. Step 4: Simplify right side
    3,913,435.27x = 72,617,989,049,658.03
  5. Step 5: Solve for x
    x = 72,617,989,049,658.03/3,913,435.27
  6. Step 6: Final answer
    x = 18,556,072.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.