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Finding the Third Proportional to 4,172,836 and 8,896,856

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Solution

The third proportional to 4,172,836 and 8,896,856 is: 18,968,885.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172,836 : 8,896,856 = 8,896,856 : x
  2. Step 2: Convert to fraction form
    4,172,836/8,896,856 = 8,896,856/x
  3. Step 3: Cross multiply
    4,172,836x = 8,896,856 × 8,896,856
  4. Step 4: Simplify right side
    4,172,836x = 79,154,046,684,736
  5. Step 5: Solve for x
    x = 79,154,046,684,736/4,172,836
  6. Step 6: Final answer
    x = 18,968,885.11

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.