Home / 720,809,100,450.06-994,717,543,656.24-391,212,143,698.60

Finding the Fourth Proportional to 720,809,100,450.06, 994,717,543,656.24 and 391,212,143,698.60

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Solution

The fourth proportional to 720,809,100,450.06, 994,717,543,656.24 and 391,212,143,698.60 is: 539,873,292,922.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,450.06 : 994,717,543,656.24 = 391,212,143,698.60 : x
  2. Step 2: Convert to fraction form
    720,809,100,450.06/994,717,543,656.24 = 391,212,143,698.60/x
  3. Step 3: Cross multiply
    720,809,100,450.06x = 994,717,543,656.24 × 391,212,143,698.60
  4. Step 4: Simplify right side
    720,809,100,450.06x = 389,145,582,628,363,378,360,320
  5. Step 5: Solve for x
    x = 389,145,582,628,363,378,360,320/720,809,100,450.06
  6. Step 6: Final answer
    x = 539,873,292,922.34

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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.