Home / 639,456.80-882,448.52-352,974.83

Finding the Fourth Proportional to 639,456.80, 882,448.52 and 352,974.83

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Solution

The fourth proportional to 639,456.80, 882,448.52 and 352,974.83 is: 487,104.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,456.80 : 882,448.52 = 352,974.83 : x
  2. Step 2: Convert to fraction form
    639,456.80/882,448.52 = 352,974.83/x
  3. Step 3: Cross multiply
    639,456.80x = 882,448.52 × 352,974.83
  4. Step 4: Simplify right side
    639,456.80x = 311,482,116,330.75
  5. Step 5: Solve for x
    x = 311,482,116,330.75/639,456.80
  6. Step 6: Final answer
    x = 487,104.24

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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.