Home / 387,749,857.20-580,617,016.20-306,456,442.80

Finding the Fourth Proportional to 387,749,857.20, 580,617,016.20 and 306,456,442.80

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Solution

The fourth proportional to 387,749,857.20, 580,617,016.20 and 306,456,442.80 is: 458,888,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,749,857.20 : 580,617,016.20 = 306,456,442.80 : x
  2. Step 2: Convert to fraction form
    387,749,857.20/580,617,016.20 = 306,456,442.80/x
  3. Step 3: Cross multiply
    387,749,857.20x = 580,617,016.20 × 306,456,442.80
  4. Step 4: Simplify right side
    387,749,857.20x = 177,933,825,413,801,984
  5. Step 5: Solve for x
    x = 177,933,825,413,801,984/387,749,857.20
  6. Step 6: Final answer
    x = 458,888,177.80

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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.