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Finding the Third Proportional to 643,853,696 and 1,394,670,421

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Solution

The third proportional to 643,853,696 and 1,394,670,421 is: 3,021,036,603.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,853,696 : 1,394,670,421 = 1,394,670,421 : x
  2. Step 2: Convert to fraction form
    643,853,696/1,394,670,421 = 1,394,670,421/x
  3. Step 3: Cross multiply
    643,853,696x = 1,394,670,421 × 1,394,670,421
  4. Step 4: Simplify right side
    643,853,696x = 1,945,105,583,212,317,184
  5. Step 5: Solve for x
    x = 1,945,105,583,212,317,184/643,853,696
  6. Step 6: Final answer
    x = 3,021,036,603.96

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.