Home / 426,352,352.70-639,589,534.85-131,272,439.54

Finding the Fourth Proportional to 426,352,352.70, 639,589,534.85 and 131,272,439.54

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Solution

The fourth proportional to 426,352,352.70, 639,589,534.85 and 131,272,439.54 is: 196,927,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,352,352.70 : 639,589,534.85 = 131,272,439.54 : x
  2. Step 2: Convert to fraction form
    426,352,352.70/639,589,534.85 = 131,272,439.54/x
  3. Step 3: Cross multiply
    426,352,352.70x = 639,589,534.85 × 131,272,439.54
  4. Step 4: Simplify right side
    426,352,352.70x = 83,960,478,540,159,040
  5. Step 5: Solve for x
    x = 83,960,478,540,159,040/426,352,352.70
  6. Step 6: Final answer
    x = 196,927,442.78

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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.