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Finding the Fourth Proportional to 393,303,613.80, 589,955,420.70 and 354,336,522.60

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Solution

The fourth proportional to 393,303,613.80, 589,955,420.70 and 354,336,522.60 is: 531,504,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,303,613.80 : 589,955,420.70 = 354,336,522.60 : x
  2. Step 2: Convert to fraction form
    393,303,613.80/589,955,420.70 = 354,336,522.60/x
  3. Step 3: Cross multiply
    393,303,613.80x = 589,955,420.70 × 354,336,522.60
  4. Step 4: Simplify right side
    393,303,613.80x = 209,042,752,259,858,080
  5. Step 5: Solve for x
    x = 209,042,752,259,858,080/393,303,613.80
  6. Step 6: Final answer
    x = 531,504,783.90

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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.