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Finding the Third Proportional to 643,883,560 and 1,396,653,360

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Solution

The third proportional to 643,883,560 and 1,396,653,360 is: 3,029,492,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,883,560 : 1,396,653,360 = 1,396,653,360 : x
  2. Step 2: Convert to fraction form
    643,883,560/1,396,653,360 = 1,396,653,360/x
  3. Step 3: Cross multiply
    643,883,560x = 1,396,653,360 × 1,396,653,360
  4. Step 4: Simplify right side
    643,883,560x = 1,950,640,607,999,289,600
  5. Step 5: Solve for x
    x = 1,950,640,607,999,289,600/643,883,560
  6. Step 6: Final answer
    x = 3,029,492,798.36

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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.