Home / 660,718.20-991,077.30-394,997.70

Finding the Fourth Proportional to 660,718.20, 991,077.30 and 394,997.70

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Solution

The fourth proportional to 660,718.20, 991,077.30 and 394,997.70 is: 592,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,718.20 : 991,077.30 = 394,997.70 : x
  2. Step 2: Convert to fraction form
    660,718.20/991,077.30 = 394,997.70/x
  3. Step 3: Cross multiply
    660,718.20x = 991,077.30 × 394,997.70
  4. Step 4: Simplify right side
    660,718.20x = 391,473,254,022.21
  5. Step 5: Solve for x
    x = 391,473,254,022.21/660,718.20
  6. Step 6: Final answer
    x = 592,496.55

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Similar ratio
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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.