Home / 840,071,761.20-1,259,729,728.20-322,330,129.20

Finding the Fourth Proportional to 840,071,761.20, 1,259,729,728.20 and 322,330,129.20

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Solution

The fourth proportional to 840,071,761.20, 1,259,729,728.20 and 322,330,129.20 is: 483,350,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,071,761.20 : 1,259,729,728.20 = 322,330,129.20 : x
  2. Step 2: Convert to fraction form
    840,071,761.20/1,259,729,728.20 = 322,330,129.20/x
  3. Step 3: Cross multiply
    840,071,761.20x = 1,259,729,728.20 × 322,330,129.20
  4. Step 4: Simplify right side
    840,071,761.20x = 406,048,846,047,786,880
  5. Step 5: Solve for x
    x = 406,048,846,047,786,880/840,071,761.20
  6. Step 6: Final answer
    x = 483,350,190.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.