Home / 1,279,057,575.57-1,918,769,380.97-393,817,836.03

Finding the Fourth Proportional to 1,279,057,575.57, 1,918,769,380.97 and 393,817,836.03

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Solution

The fourth proportional to 1,279,057,575.57, 1,918,769,380.97 and 393,817,836.03 is: 590,783,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,057,575.57 : 1,918,769,380.97 = 393,817,836.03 : x
  2. Step 2: Convert to fraction form
    1,279,057,575.57/1,918,769,380.97 = 393,817,836.03/x
  3. Step 3: Cross multiply
    1,279,057,575.57x = 1,918,769,380.97 × 393,817,836.03
  4. Step 4: Simplify right side
    1,279,057,575.57x = 755,645,605,454,227,968
  5. Step 5: Solve for x
    x = 755,645,605,454,227,968/1,279,057,575.57
  6. Step 6: Final answer
    x = 590,783,104.60

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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.