Home / 663,612.20-995,418.30-220,380.20

Finding the Fourth Proportional to 663,612.20, 995,418.30 and 220,380.20

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Solution

The fourth proportional to 663,612.20, 995,418.30 and 220,380.20 is: 330,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,612.20 : 995,418.30 = 220,380.20 : x
  2. Step 2: Convert to fraction form
    663,612.20/995,418.30 = 220,380.20/x
  3. Step 3: Cross multiply
    663,612.20x = 995,418.30 × 220,380.20
  4. Step 4: Simplify right side
    663,612.20x = 219,370,484,037.66
  5. Step 5: Solve for x
    x = 219,370,484,037.66/663,612.20
  6. Step 6: Final answer
    x = 330,570.30

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Half scale
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Double scale
Find fourth proportional to 663,613.20, 995,419.80 and 220,381.20
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.