Home / 639,825.82-959,918.07-280,028.02

Finding the Fourth Proportional to 639,825.82, 959,918.07 and 280,028.02

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Solution

The fourth proportional to 639,825.82, 959,918.07 and 280,028.02 is: 420,120.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,825.82 : 959,918.07 = 280,028.02 : x
  2. Step 2: Convert to fraction form
    639,825.82/959,918.07 = 280,028.02/x
  3. Step 3: Cross multiply
    639,825.82x = 959,918.07 × 280,028.02
  4. Step 4: Simplify right side
    639,825.82x = 268,803,960,804.08
  5. Step 5: Solve for x
    x = 268,803,960,804.08/639,825.82
  6. Step 6: Final answer
    x = 420,120.53

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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.