Home / 408,147,609,812.20-612,221,414,718.30-381,699,704,429.80

Finding the Fourth Proportional to 408,147,609,812.20, 612,221,414,718.30 and 381,699,704,429.80

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Solution

The fourth proportional to 408,147,609,812.20, 612,221,414,718.30 and 381,699,704,429.80 is: 572,549,556,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,147,609,812.20 : 612,221,414,718.30 = 381,699,704,429.80 : x
  2. Step 2: Convert to fraction form
    408,147,609,812.20/612,221,414,718.30 = 381,699,704,429.80/x
  3. Step 3: Cross multiply
    408,147,609,812.20x = 612,221,414,718.30 × 381,699,704,429.80
  4. Step 4: Simplify right side
    408,147,609,812.20x = 233,684,733,043,569,135,190,016
  5. Step 5: Solve for x
    x = 233,684,733,043,569,135,190,016/408,147,609,812.20
  6. Step 6: Final answer
    x = 572,549,556,644.70

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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.