Home / 639,185.13-959,205.38-265,208.13

Finding the Fourth Proportional to 639,185.13, 959,205.38 and 265,208.13

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Solution

The fourth proportional to 639,185.13, 959,205.38 and 265,208.13 is: 397,989.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,185.13 : 959,205.38 = 265,208.13 : x
  2. Step 2: Convert to fraction form
    639,185.13/959,205.38 = 265,208.13/x
  3. Step 3: Cross multiply
    639,185.13x = 959,205.38 × 265,208.13
  4. Step 4: Simplify right side
    639,185.13x = 254,389,063,789.70
  5. Step 5: Solve for x
    x = 254,389,063,789.70/639,185.13
  6. Step 6: Final answer
    x = 397,989.65

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1.5x scale

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.