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Finding the Third Proportional to 391,953,456 and 855,628,848

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Solution

The third proportional to 391,953,456 and 855,628,848 is: 1,867,825,667.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,953,456 : 855,628,848 = 855,628,848 : x
  2. Step 2: Convert to fraction form
    391,953,456/855,628,848 = 855,628,848/x
  3. Step 3: Cross multiply
    391,953,456x = 855,628,848 × 855,628,848
  4. Step 4: Simplify right side
    391,953,456x = 732,100,725,529,807,104
  5. Step 5: Solve for x
    x = 732,100,725,529,807,104/391,953,456
  6. Step 6: Final answer
    x = 1,867,825,667.37

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.