Home / 420,059,121.60-629,080,912.80-204,396,427.20

Finding the Fourth Proportional to 420,059,121.60, 629,080,912.80 and 204,396,427.20

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Solution

The fourth proportional to 420,059,121.60, 629,080,912.80 and 204,396,427.20 is: 306,104,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,059,121.60 : 629,080,912.80 = 204,396,427.20 : x
  2. Step 2: Convert to fraction form
    420,059,121.60/629,080,912.80 = 204,396,427.20/x
  3. Step 3: Cross multiply
    420,059,121.60x = 629,080,912.80 × 204,396,427.20
  4. Step 4: Simplify right side
    420,059,121.60x = 128,581,890,996,034,736
  5. Step 5: Solve for x
    x = 128,581,890,996,034,736/420,059,121.60
  6. Step 6: Final answer
    x = 306,104,270.53

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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.