Home / 639,136.78-882,027.07-352,675.31

Finding the Fourth Proportional to 639,136.78, 882,027.07 and 352,675.31

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Solution

The fourth proportional to 639,136.78, 882,027.07 and 352,675.31 is: 486,702.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,136.78 : 882,027.07 = 352,675.31 : x
  2. Step 2: Convert to fraction form
    639,136.78/882,027.07 = 352,675.31/x
  3. Step 3: Cross multiply
    639,136.78x = 882,027.07 × 352,675.31
  4. Step 4: Simplify right side
    639,136.78x = 311,069,170,340.64
  5. Step 5: Solve for x
    x = 311,069,170,340.64/639,136.78
  6. Step 6: Final answer
    x = 486,702.03

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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.