Home / 720,809,100,448.80-994,717,543,654.54-391,212,143,697.36

Finding the Fourth Proportional to 720,809,100,448.80, 994,717,543,654.54 and 391,212,143,697.36

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Solution

The fourth proportional to 720,809,100,448.80, 994,717,543,654.54 and 391,212,143,697.36 is: 539,873,292,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,448.80 : 994,717,543,654.54 = 391,212,143,697.36 : x
  2. Step 2: Convert to fraction form
    720,809,100,448.80/994,717,543,654.54 = 391,212,143,697.36/x
  3. Step 3: Cross multiply
    720,809,100,448.80x = 994,717,543,654.54 × 391,212,143,697.36
  4. Step 4: Simplify right side
    720,809,100,448.80x = 389,145,582,626,464,868,597,760
  5. Step 5: Solve for x
    x = 389,145,582,626,464,868,597,760/720,809,100,448.80
  6. Step 6: Final answer
    x = 539,873,292,920.65

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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.