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Finding the Third Proportional to 668,818,917 and 1,398,620,655

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Solution

The third proportional to 668,818,917 and 1,398,620,655 is: 2,924,767,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,818,917 : 1,398,620,655 = 1,398,620,655 : x
  2. Step 2: Convert to fraction form
    668,818,917/1,398,620,655 = 1,398,620,655/x
  3. Step 3: Cross multiply
    668,818,917x = 1,398,620,655 × 1,398,620,655
  4. Step 4: Simplify right side
    668,818,917x = 1,956,139,736,592,628,992
  5. Step 5: Solve for x
    x = 1,956,139,736,592,628,992/668,818,917
  6. Step 6: Final answer
    x = 2,924,767,357.61

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.