Home / 720,809,100,450.05-994,717,543,656.25-391,212,143,698.59

Finding the Fourth Proportional to 720,809,100,450.05, 994,717,543,656.25 and 391,212,143,698.59

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Solution

The fourth proportional to 720,809,100,450.05, 994,717,543,656.25 and 391,212,143,698.59 is: 539,873,292,922.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,450.05 : 994,717,543,656.25 = 391,212,143,698.59 : x
  2. Step 2: Convert to fraction form
    720,809,100,450.05/994,717,543,656.25 = 391,212,143,698.59/x
  3. Step 3: Cross multiply
    720,809,100,450.05x = 994,717,543,656.25 × 391,212,143,698.59
  4. Step 4: Simplify right side
    720,809,100,450.05x = 389,145,582,628,357,405,671,424
  5. Step 5: Solve for x
    x = 389,145,582,628,357,405,671,424/720,809,100,450.05
  6. Step 6: Final answer
    x = 539,873,292,922.34

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Double scale
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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.