Home / 639,395.27-882,372.79-352,915.58

Finding the Fourth Proportional to 639,395.27, 882,372.79 and 352,915.58

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Solution

The fourth proportional to 639,395.27, 882,372.79 and 352,915.58 is: 487,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,395.27 : 882,372.79 = 352,915.58 : x
  2. Step 2: Convert to fraction form
    639,395.27/882,372.79 = 352,915.58/x
  3. Step 3: Cross multiply
    639,395.27x = 882,372.79 × 352,915.58
  4. Step 4: Simplify right side
    639,395.27x = 311,403,107,606.15
  5. Step 5: Solve for x
    x = 311,403,107,606.15/639,395.27
  6. Step 6: Final answer
    x = 487,027.54

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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.