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Finding the Third Proportional to 8,378,628 and 12,811,440

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Solution

The third proportional to 8,378,628 and 12,811,440 is: 19,589,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378,628 : 12,811,440 = 12,811,440 : x
  2. Step 2: Convert to fraction form
    8,378,628/12,811,440 = 12,811,440/x
  3. Step 3: Cross multiply
    8,378,628x = 12,811,440 × 12,811,440
  4. Step 4: Simplify right side
    8,378,628x = 164,132,994,873,600
  5. Step 5: Solve for x
    x = 164,132,994,873,600/8,378,628
  6. Step 6: Final answer
    x = 19,589,483.49

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.