Home / 639,979.13-883,154.34-353,493.07

Finding the Fourth Proportional to 639,979.13, 883,154.34 and 353,493.07

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Solution

The fourth proportional to 639,979.13, 883,154.34 and 353,493.07 is: 487,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,979.13 : 883,154.34 = 353,493.07 : x
  2. Step 2: Convert to fraction form
    639,979.13/883,154.34 = 353,493.07/x
  3. Step 3: Cross multiply
    639,979.13x = 883,154.34 × 353,493.07
  4. Step 4: Simplify right side
    639,979.13x = 312,188,936,722.54
  5. Step 5: Solve for x
    x = 312,188,936,722.54/639,979.13
  6. Step 6: Final answer
    x = 487,811.12

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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.