Home / 664,979.35-917,677.37-378,517.88

Finding the Fourth Proportional to 664,979.35, 917,677.37 and 378,517.88

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Solution

The fourth proportional to 664,979.35, 917,677.37 and 378,517.88 is: 522,358.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,979.35 : 917,677.37 = 378,517.88 : x
  2. Step 2: Convert to fraction form
    664,979.35/917,677.37 = 378,517.88/x
  3. Step 3: Cross multiply
    664,979.35x = 917,677.37 × 378,517.88
  4. Step 4: Simplify right side
    664,979.35x = 347,357,292,616.38
  5. Step 5: Solve for x
    x = 347,357,292,616.38/664,979.35
  6. Step 6: Final answer
    x = 522,358.01

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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.