Home / 428,156,585.44-642,180,093.78-136,999,350.88

Finding the Fourth Proportional to 428,156,585.44, 642,180,093.78 and 136,999,350.88

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Solution

The fourth proportional to 428,156,585.44, 642,180,093.78 and 136,999,350.88 is: 205,481,496.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,156,585.44 : 642,180,093.78 = 136,999,350.88 : x
  2. Step 2: Convert to fraction form
    428,156,585.44/642,180,093.78 = 136,999,350.88/x
  3. Step 3: Cross multiply
    428,156,585.44x = 642,180,093.78 × 136,999,350.88
  4. Step 4: Simplify right side
    428,156,585.44x = 87,978,255,995,917,520
  5. Step 5: Solve for x
    x = 87,978,255,995,917,520/428,156,585.44
  6. Step 6: Final answer
    x = 205,481,496.69

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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.