Home / 639,132.78-882,021.70-352,671.32

Finding the Fourth Proportional to 639,132.78, 882,021.70 and 352,671.32

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Solution

The fourth proportional to 639,132.78, 882,021.70 and 352,671.32 is: 486,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,132.78 : 882,021.70 = 352,671.32 : x
  2. Step 2: Convert to fraction form
    639,132.78/882,021.70 = 352,671.32/x
  3. Step 3: Cross multiply
    639,132.78x = 882,021.70 × 352,671.32
  4. Step 4: Simplify right side
    639,132.78x = 311,063,757,207.64
  5. Step 5: Solve for x
    x = 311,063,757,207.64/639,132.78
  6. Step 6: Final answer
    x = 486,696.61

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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.