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Finding the Fourth Proportional to 345,987,773,999.70, 518,981,660,999.55 and 345,987,773,999.70

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Solution

The fourth proportional to 345,987,773,999.70, 518,981,660,999.55 and 345,987,773,999.70 is: 518,981,660,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,987,773,999.70 : 518,981,660,999.55 = 345,987,773,999.70 : x
  2. Step 2: Convert to fraction form
    345,987,773,999.70/518,981,660,999.55 = 345,987,773,999.70/x
  3. Step 3: Cross multiply
    345,987,773,999.70x = 518,981,660,999.55 × 345,987,773,999.70
  4. Step 4: Simplify right side
    345,987,773,999.70x = 179,561,309,635,901,220,978,688
  5. Step 5: Solve for x
    x = 179,561,309,635,901,220,978,688/345,987,773,999.70
  6. Step 6: Final answer
    x = 518,981,660,999.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.