Home / 393,983,998.60-590,975,997.90-212,585,470.60

Finding the Fourth Proportional to 393,983,998.60, 590,975,997.90 and 212,585,470.60

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Solution

The fourth proportional to 393,983,998.60, 590,975,997.90 and 212,585,470.60 is: 318,878,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,983,998.60 : 590,975,997.90 = 212,585,470.60 : x
  2. Step 2: Convert to fraction form
    393,983,998.60/590,975,997.90 = 212,585,470.60/x
  3. Step 3: Cross multiply
    393,983,998.60x = 590,975,997.90 × 212,585,470.60
  4. Step 4: Simplify right side
    393,983,998.60x = 125,632,910,626,876,096
  5. Step 5: Solve for x
    x = 125,632,910,626,876,096/393,983,998.60
  6. Step 6: Final answer
    x = 318,878,205.90

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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.