Home / 387,749,851.20-580,617,007.20-306,456,436.80

Finding the Fourth Proportional to 387,749,851.20, 580,617,007.20 and 306,456,436.80

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Solution

The fourth proportional to 387,749,851.20, 580,617,007.20 and 306,456,436.80 is: 458,888,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,749,851.20 : 580,617,007.20 = 306,456,436.80 : x
  2. Step 2: Convert to fraction form
    387,749,851.20/580,617,007.20 = 306,456,436.80/x
  3. Step 3: Cross multiply
    387,749,851.20x = 580,617,007.20 × 306,456,436.80
  4. Step 4: Simplify right side
    387,749,851.20x = 177,933,819,171,991,968
  5. Step 5: Solve for x
    x = 177,933,819,171,991,968/387,749,851.20
  6. Step 6: Final answer
    x = 458,888,168.81

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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.