Home / 638,481.09-881,077.35-348,086.37

Finding the Fourth Proportional to 638,481.09, 881,077.35 and 348,086.37

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Solution

The fourth proportional to 638,481.09, 881,077.35 and 348,086.37 is: 480,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,481.09 : 881,077.35 = 348,086.37 : x
  2. Step 2: Convert to fraction form
    638,481.09/881,077.35 = 348,086.37/x
  3. Step 3: Cross multiply
    638,481.09x = 881,077.35 × 348,086.37
  4. Step 4: Simplify right side
    638,481.09x = 306,691,016,450.72
  5. Step 5: Solve for x
    x = 306,691,016,450.72/638,481.09
  6. Step 6: Final answer
    x = 480,344.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.