Home / 720,809,100,896.76-994,717,544,270.94-391,212,144,143.64

Finding the Fourth Proportional to 720,809,100,896.76, 994,717,544,270.94 and 391,212,144,143.64

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Solution

The fourth proportional to 720,809,100,896.76, 994,717,544,270.94 and 391,212,144,143.64 is: 539,873,293,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,896.76 : 994,717,544,270.94 = 391,212,144,143.64 : x
  2. Step 2: Convert to fraction form
    720,809,100,896.76/994,717,544,270.94 = 391,212,144,143.64/x
  3. Step 3: Cross multiply
    720,809,100,896.76x = 994,717,544,270.94 × 391,212,144,143.64
  4. Step 4: Simplify right side
    720,809,100,896.76x = 389,145,583,311,530,607,247,360
  5. Step 5: Solve for x
    x = 389,145,583,311,530,607,247,360/720,809,100,896.76
  6. Step 6: Final answer
    x = 539,873,293,535.55

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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.