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Finding the Third Proportional to 5,487,490 and 11,817,810

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Solution

The third proportional to 5,487,490 and 11,817,810 is: 25,450,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487,490 : 11,817,810 = 11,817,810 : x
  2. Step 2: Convert to fraction form
    5,487,490/11,817,810 = 11,817,810/x
  3. Step 3: Cross multiply
    5,487,490x = 11,817,810 × 11,817,810
  4. Step 4: Simplify right side
    5,487,490x = 139,660,633,196,100
  5. Step 5: Solve for x
    x = 139,660,633,196,100/5,487,490
  6. Step 6: Final answer
    x = 25,450,731.24

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.