Home / 639,419.30-882,398.71-352,939.46

Finding the Fourth Proportional to 639,419.30, 882,398.71 and 352,939.46

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Solution

The fourth proportional to 639,419.30, 882,398.71 and 352,939.46 is: 487,056.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,419.30 : 882,398.71 = 352,939.46 : x
  2. Step 2: Convert to fraction form
    639,419.30/882,398.71 = 352,939.46/x
  3. Step 3: Cross multiply
    639,419.30x = 882,398.71 × 352,939.46
  4. Step 4: Simplify right side
    639,419.30x = 311,433,322,447.40
  5. Step 5: Solve for x
    x = 311,433,322,447.40/639,419.30
  6. Step 6: Final answer
    x = 487,056.50

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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.