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Finding the Fourth Proportional to 557,539,620.80, 836,309,431.20 and 339,861,387.20

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Solution

The fourth proportional to 557,539,620.80, 836,309,431.20 and 339,861,387.20 is: 509,792,080.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,539,620.80 : 836,309,431.20 = 339,861,387.20 : x
  2. Step 2: Convert to fraction form
    557,539,620.80/836,309,431.20 = 339,861,387.20/x
  3. Step 3: Cross multiply
    557,539,620.80x = 836,309,431.20 × 339,861,387.20
  4. Step 4: Simplify right side
    557,539,620.80x = 284,229,283,416,074,976
  5. Step 5: Solve for x
    x = 284,229,283,416,074,976/557,539,620.80
  6. Step 6: Final answer
    x = 509,792,080.80

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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.