Home / 407,786,998.20-611,680,497.30-120,572,662.20

Finding the Fourth Proportional to 407,786,998.20, 611,680,497.30 and 120,572,662.20

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Solution

The fourth proportional to 407,786,998.20, 611,680,497.30 and 120,572,662.20 is: 180,858,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,786,998.20 : 611,680,497.30 = 120,572,662.20 : x
  2. Step 2: Convert to fraction form
    407,786,998.20/611,680,497.30 = 120,572,662.20/x
  3. Step 3: Cross multiply
    407,786,998.20x = 611,680,497.30 × 120,572,662.20
  4. Step 4: Simplify right side
    407,786,998.20x = 73,751,945,975,280,912
  5. Step 5: Solve for x
    x = 73,751,945,975,280,912/407,786,998.20
  6. Step 6: Final answer
    x = 180,858,993.30

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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.