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Finding the Fourth Proportional to 869,974,733.94, 1,305,084,419.82 and 279,567,034.80

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Solution

The fourth proportional to 869,974,733.94, 1,305,084,419.82 and 279,567,034.80 is: 419,389,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,974,733.94 : 1,305,084,419.82 = 279,567,034.80 : x
  2. Step 2: Convert to fraction form
    869,974,733.94/1,305,084,419.82 = 279,567,034.80/x
  3. Step 3: Cross multiply
    869,974,733.94x = 1,305,084,419.82 × 279,567,034.80
  4. Step 4: Simplify right side
    869,974,733.94x = 364,858,581,412,755,776
  5. Step 5: Solve for x
    x = 364,858,581,412,755,776/869,974,733.94
  6. Step 6: Final answer
    x = 419,389,859.47

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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.