Home / 639,385.14-959,257.54-279,587.64

Finding the Fourth Proportional to 639,385.14, 959,257.54 and 279,587.64

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Solution

The fourth proportional to 639,385.14, 959,257.54 and 279,587.64 is: 419,460.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,385.14 : 959,257.54 = 279,587.64 : x
  2. Step 2: Convert to fraction form
    639,385.14/959,257.54 = 279,587.64/x
  3. Step 3: Cross multiply
    639,385.14x = 959,257.54 × 279,587.64
  4. Step 4: Simplify right side
    639,385.14x = 268,196,551,760.81
  5. Step 5: Solve for x
    x = 268,196,551,760.81/639,385.14
  6. Step 6: Final answer
    x = 419,460.10

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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.