Home / 695,769.64-960,149.68-389,844.80

Finding the Fourth Proportional to 695,769.64, 960,149.68 and 389,844.80

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Solution

The fourth proportional to 695,769.64, 960,149.68 and 389,844.80 is: 537,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,769.64 : 960,149.68 = 389,844.80 : x
  2. Step 2: Convert to fraction form
    695,769.64/960,149.68 = 389,844.80/x
  3. Step 3: Cross multiply
    695,769.64x = 960,149.68 × 389,844.80
  4. Step 4: Simplify right side
    695,769.64x = 374,309,359,969.66
  5. Step 5: Solve for x
    x = 374,309,359,969.66/695,769.64
  6. Step 6: Final answer
    x = 537,978.86

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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.