Home / 393,984,147.60-590,976,221.40-385,921,990.80

Finding the Fourth Proportional to 393,984,147.60, 590,976,221.40 and 385,921,990.80

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Solution

The fourth proportional to 393,984,147.60, 590,976,221.40 and 385,921,990.80 is: 578,882,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,984,147.60 : 590,976,221.40 = 385,921,990.80 : x
  2. Step 2: Convert to fraction form
    393,984,147.60/590,976,221.40 = 385,921,990.80/x
  3. Step 3: Cross multiply
    393,984,147.60x = 590,976,221.40 × 385,921,990.80
  4. Step 4: Simplify right side
    393,984,147.60x = 228,070,719,878,149,568
  5. Step 5: Solve for x
    x = 228,070,719,878,149,568/393,984,147.60
  6. Step 6: Final answer
    x = 578,882,986.20

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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.