Home / 399,126,707.20-599,193,945.60-215,040,793.60

Finding the Fourth Proportional to 399,126,707.20, 599,193,945.60 and 215,040,793.60

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Solution

The fourth proportional to 399,126,707.20, 599,193,945.60 and 215,040,793.60 is: 322,832,672.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,126,707.20 : 599,193,945.60 = 215,040,793.60 : x
  2. Step 2: Convert to fraction form
    399,126,707.20/599,193,945.60 = 215,040,793.60/x
  3. Step 3: Cross multiply
    399,126,707.20x = 599,193,945.60 × 215,040,793.60
  4. Step 4: Simplify right side
    399,126,707.20x = 128,851,141,582,139,232
  5. Step 5: Solve for x
    x = 128,851,141,582,139,232/399,126,707.20
  6. Step 6: Final answer
    x = 322,832,672.58

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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.