Home / 720,809,100,545.75-994,717,543,788.30-391,212,143,794.61

Finding the Fourth Proportional to 720,809,100,545.75, 994,717,543,788.30 and 391,212,143,794.61

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Solution

The fourth proportional to 720,809,100,545.75, 994,717,543,788.30 and 391,212,143,794.61 is: 539,873,293,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,545.75 : 994,717,543,788.30 = 391,212,143,794.61 : x
  2. Step 2: Convert to fraction form
    720,809,100,545.75/994,717,543,788.30 = 391,212,143,794.61/x
  3. Step 3: Cross multiply
    720,809,100,545.75x = 994,717,543,788.30 × 391,212,143,794.61
  4. Step 4: Simplify right side
    720,809,100,545.75x = 389,145,582,775,529,694,560,256
  5. Step 5: Solve for x
    x = 389,145,582,775,529,694,560,256/720,809,100,545.75
  6. Step 6: Final answer
    x = 539,873,293,054.84

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1.5x scale

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.