Home / 639,470.44-882,464.34-352,990.72

Finding the Fourth Proportional to 639,470.44, 882,464.34 and 352,990.72

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Solution

The fourth proportional to 639,470.44, 882,464.34 and 352,990.72 is: 487,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,470.44 : 882,464.34 = 352,990.72 : x
  2. Step 2: Convert to fraction form
    639,470.44/882,464.34 = 352,990.72/x
  3. Step 3: Cross multiply
    639,470.44x = 882,464.34 × 352,990.72
  4. Step 4: Simplify right side
    639,470.44x = 311,501,722,750.93
  5. Step 5: Solve for x
    x = 311,501,722,750.93/639,470.44
  6. Step 6: Final answer
    x = 487,124.51

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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.