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Finding the Third Proportional to 3,920,640.75 and 8,492,877

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Solution

The third proportional to 3,920,640.75 and 8,492,877 is: 18,397,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920,640.75 : 8,492,877 = 8,492,877 : x
  2. Step 2: Convert to fraction form
    3,920,640.75/8,492,877 = 8,492,877/x
  3. Step 3: Cross multiply
    3,920,640.75x = 8,492,877 × 8,492,877
  4. Step 4: Simplify right side
    3,920,640.75x = 72,128,959,737,129
  5. Step 5: Solve for x
    x = 72,128,959,737,129/3,920,640.75
  6. Step 6: Final answer
    x = 18,397,237.68

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.