Home / 485,028,313.20-727,542,469.80-139,993,196.40

Finding the Fourth Proportional to 485,028,313.20, 727,542,469.80 and 139,993,196.40

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Solution

The fourth proportional to 485,028,313.20, 727,542,469.80 and 139,993,196.40 is: 209,989,794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,028,313.20 : 727,542,469.80 = 139,993,196.40 : x
  2. Step 2: Convert to fraction form
    485,028,313.20/727,542,469.80 = 139,993,196.40/x
  3. Step 3: Cross multiply
    485,028,313.20x = 727,542,469.80 × 139,993,196.40
  4. Step 4: Simplify right side
    485,028,313.20x = 101,850,995,864,052,464
  5. Step 5: Solve for x
    x = 101,850,995,864,052,464/485,028,313.20
  6. Step 6: Final answer
    x = 209,989,794.60

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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.