Home / 639,837.05-959,934.94-280,039.25

Finding the Fourth Proportional to 639,837.05, 959,934.94 and 280,039.25

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Solution

The fourth proportional to 639,837.05, 959,934.94 and 280,039.25 is: 420,137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,837.05 : 959,934.94 = 280,039.25 : x
  2. Step 2: Convert to fraction form
    639,837.05/959,934.94 = 280,039.25/x
  3. Step 3: Cross multiply
    639,837.05x = 959,934.94 × 280,039.25
  4. Step 4: Simplify right side
    639,837.05x = 268,819,462,346.13
  5. Step 5: Solve for x
    x = 268,819,462,346.13/639,837.05
  6. Step 6: Final answer
    x = 420,137.38

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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.