Home / 387,749,861.20-580,617,022.20-306,456,446.80

Finding the Fourth Proportional to 387,749,861.20, 580,617,022.20 and 306,456,446.80

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Solution

The fourth proportional to 387,749,861.20, 580,617,022.20 and 306,456,446.80 is: 458,888,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,749,861.20 : 580,617,022.20 = 306,456,446.80 : x
  2. Step 2: Convert to fraction form
    387,749,861.20/580,617,022.20 = 306,456,446.80/x
  3. Step 3: Cross multiply
    387,749,861.20x = 580,617,022.20 × 306,456,446.80
  4. Step 4: Simplify right side
    387,749,861.20x = 177,933,829,575,008,736
  5. Step 5: Solve for x
    x = 177,933,829,575,008,736/387,749,861.20
  6. Step 6: Final answer
    x = 458,888,183.80

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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.