Home / 685,150,640.96-1,027,561,405.52-316,331,230.96

Finding the Fourth Proportional to 685,150,640.96, 1,027,561,405.52 and 316,331,230.96

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Solution

The fourth proportional to 685,150,640.96, 1,027,561,405.52 and 316,331,230.96 is: 474,420,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,150,640.96 : 1,027,561,405.52 = 316,331,230.96 : x
  2. Step 2: Convert to fraction form
    685,150,640.96/1,027,561,405.52 = 316,331,230.96/x
  3. Step 3: Cross multiply
    685,150,640.96x = 1,027,561,405.52 × 316,331,230.96
  4. Step 4: Simplify right side
    685,150,640.96x = 325,049,764,295,129,280
  5. Step 5: Solve for x
    x = 325,049,764,295,129,280/685,150,640.96
  6. Step 6: Final answer
    x = 474,420,871.65

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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.