Home / 720,809,100,451.06-994,717,543,657.62-391,212,143,699.60

Finding the Fourth Proportional to 720,809,100,451.06, 994,717,543,657.62 and 391,212,143,699.60

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Solution

The fourth proportional to 720,809,100,451.06, 994,717,543,657.62 and 391,212,143,699.60 is: 539,873,292,923.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,451.06 : 994,717,543,657.62 = 391,212,143,699.60 : x
  2. Step 2: Convert to fraction form
    720,809,100,451.06/994,717,543,657.62 = 391,212,143,699.60/x
  3. Step 3: Cross multiply
    720,809,100,451.06x = 994,717,543,657.62 × 391,212,143,699.60
  4. Step 4: Simplify right side
    720,809,100,451.06x = 389,145,582,629,897,956,753,408
  5. Step 5: Solve for x
    x = 389,145,582,629,897,956,753,408/720,809,100,451.06
  6. Step 6: Final answer
    x = 539,873,292,923.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.