Home / 639,339.22-882,283.78-352,859.30

Finding the Fourth Proportional to 639,339.22, 882,283.78 and 352,859.30

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Solution

The fourth proportional to 639,339.22, 882,283.78 and 352,859.30 is: 486,943.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,339.22 : 882,283.78 = 352,859.30 : x
  2. Step 2: Convert to fraction form
    639,339.22/882,283.78 = 352,859.30/x
  3. Step 3: Cross multiply
    639,339.22x = 882,283.78 × 352,859.30
  4. Step 4: Simplify right side
    639,339.22x = 311,322,037,012.15
  5. Step 5: Solve for x
    x = 311,322,037,012.15/639,339.22
  6. Step 6: Final answer
    x = 486,943.44

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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.