Home / 420,059,183.60-629,081,005.80-204,396,489.20

Finding the Fourth Proportional to 420,059,183.60, 629,081,005.80 and 204,396,489.20

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Solution

The fourth proportional to 420,059,183.60, 629,081,005.80 and 204,396,489.20 is: 306,104,363.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,059,183.60 : 629,081,005.80 = 204,396,489.20 : x
  2. Step 2: Convert to fraction form
    420,059,183.60/629,081,005.80 = 204,396,489.20/x
  3. Step 3: Cross multiply
    420,059,183.60x = 629,081,005.80 × 204,396,489.20
  4. Step 4: Simplify right side
    420,059,183.60x = 128,581,949,007,924,816
  5. Step 5: Solve for x
    x = 128,581,949,007,924,816/420,059,183.60
  6. Step 6: Final answer
    x = 306,104,363.45

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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.