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Finding the Third Proportional to 391,953,458 and 855,628,852

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Solution

The third proportional to 391,953,458 and 855,628,852 is: 1,867,825,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,953,458 : 855,628,852 = 855,628,852 : x
  2. Step 2: Convert to fraction form
    391,953,458/855,628,852 = 855,628,852/x
  3. Step 3: Cross multiply
    391,953,458x = 855,628,852 × 855,628,852
  4. Step 4: Simplify right side
    391,953,458x = 732,100,732,374,837,888
  5. Step 5: Solve for x
    x = 732,100,732,374,837,888/391,953,458
  6. Step 6: Final answer
    x = 1,867,825,675.30

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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.