Home / 426,588.29-639,882.44-127,061.09

Finding the Fourth Proportional to 426,588.29, 639,882.44 and 127,061.09

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Solution

The fourth proportional to 426,588.29, 639,882.44 and 127,061.09 is: 190,591.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,588.29 : 639,882.44 = 127,061.09 : x
  2. Step 2: Convert to fraction form
    426,588.29/639,882.44 = 127,061.09/x
  3. Step 3: Cross multiply
    426,588.29x = 639,882.44 × 127,061.09
  4. Step 4: Simplify right side
    426,588.29x = 81,304,157,416.50
  5. Step 5: Solve for x
    x = 81,304,157,416.50/426,588.29
  6. Step 6: Final answer
    x = 190,591.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.