Home / 639,983.39-883,160.21-353,497.33

Finding the Fourth Proportional to 639,983.39, 883,160.21 and 353,497.33

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Solution

The fourth proportional to 639,983.39, 883,160.21 and 353,497.33 is: 487,816.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,983.39 : 883,160.21 = 353,497.33 : x
  2. Step 2: Convert to fraction form
    639,983.39/883,160.21 = 353,497.33/x
  3. Step 3: Cross multiply
    639,983.39x = 883,160.21 × 353,497.33
  4. Step 4: Simplify right side
    639,983.39x = 312,194,770,013.95
  5. Step 5: Solve for x
    x = 312,194,770,013.95/639,983.39
  6. Step 6: Final answer
    x = 487,816.99

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.