Home / 420,031,821.60-629,858,775.60-161,161,005.60

Finding the Fourth Proportional to 420,031,821.60, 629,858,775.60 and 161,161,005.60

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Solution

The fourth proportional to 420,031,821.60, 629,858,775.60 and 161,161,005.60 is: 241,669,008.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,031,821.60 : 629,858,775.60 = 161,161,005.60 : x
  2. Step 2: Convert to fraction form
    420,031,821.60/629,858,775.60 = 161,161,005.60/x
  3. Step 3: Cross multiply
    420,031,821.60x = 629,858,775.60 × 161,161,005.60
  4. Step 4: Simplify right side
    420,031,821.60x = 101,508,673,661,680,736
  5. Step 5: Solve for x
    x = 101,508,673,661,680,736/420,031,821.60
  6. Step 6: Final answer
    x = 241,669,008.02

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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.