Home / 807,422,549.20-1,211,700,694.20-347,690,654.80

Finding the Fourth Proportional to 807,422,549.20, 1,211,700,694.20 and 347,690,654.80

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Solution

The fourth proportional to 807,422,549.20, 1,211,700,694.20 and 347,690,654.80 is: 521,780,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,549.20 : 1,211,700,694.20 = 347,690,654.80 : x
  2. Step 2: Convert to fraction form
    807,422,549.20/1,211,700,694.20 = 347,690,654.80/x
  3. Step 3: Cross multiply
    807,422,549.20x = 1,211,700,694.20 × 347,690,654.80
  4. Step 4: Simplify right side
    807,422,549.20x = 421,297,007,788,012,608
  5. Step 5: Solve for x
    x = 421,297,007,788,012,608/807,422,549.20
  6. Step 6: Final answer
    x = 521,780,086.78

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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.