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Finding the Third Proportional to 3,128,931 and 6,855,642

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Solution

The third proportional to 3,128,931 and 6,855,642 is: 15,021,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,931 : 6,855,642 = 6,855,642 : x
  2. Step 2: Convert to fraction form
    3,128,931/6,855,642 = 6,855,642/x
  3. Step 3: Cross multiply
    3,128,931x = 6,855,642 × 6,855,642
  4. Step 4: Simplify right side
    3,128,931x = 46,999,827,232,164
  5. Step 5: Solve for x
    x = 46,999,827,232,164/3,128,931
  6. Step 6: Final answer
    x = 15,021,049.44

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.