Home / 639,470.88-882,469.98-352,991.16

Finding the Fourth Proportional to 639,470.88, 882,469.98 and 352,991.16

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Solution

The fourth proportional to 639,470.88, 882,469.98 and 352,991.16 is: 487,127.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,470.88 : 882,469.98 = 352,991.16 : x
  2. Step 2: Convert to fraction form
    639,470.88/882,469.98 = 352,991.16/x
  3. Step 3: Cross multiply
    639,470.88x = 882,469.98 × 352,991.16
  4. Step 4: Simplify right side
    639,470.88x = 311,504,101,905.38
  5. Step 5: Solve for x
    x = 311,504,101,905.38/639,470.88
  6. Step 6: Final answer
    x = 487,127.89

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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.