Home / 639,456.12-882,456.73-352,976.33

Finding the Fourth Proportional to 639,456.12, 882,456.73 and 352,976.33

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Solution

The fourth proportional to 639,456.12, 882,456.73 and 352,976.33 is: 487,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,456.12 : 882,456.73 = 352,976.33 : x
  2. Step 2: Convert to fraction form
    639,456.12/882,456.73 = 352,976.33/x
  3. Step 3: Cross multiply
    639,456.12x = 882,456.73 × 352,976.33
  4. Step 4: Simplify right side
    639,456.12x = 311,486,339,262.90
  5. Step 5: Solve for x
    x = 311,486,339,262.90/639,456.12
  6. Step 6: Final answer
    x = 487,111.36

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1.5x scale

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.