Home / 811,910.40-1,217,865.60-251,116.80

Finding the Fourth Proportional to 811,910.40, 1,217,865.60 and 251,116.80

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Solution

The fourth proportional to 811,910.40, 1,217,865.60 and 251,116.80 is: 376,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,910.40 : 1,217,865.60 = 251,116.80 : x
  2. Step 2: Convert to fraction form
    811,910.40/1,217,865.60 = 251,116.80/x
  3. Step 3: Cross multiply
    811,910.40x = 1,217,865.60 × 251,116.80
  4. Step 4: Simplify right side
    811,910.40x = 305,826,512,302.08
  5. Step 5: Solve for x
    x = 305,826,512,302.08/811,910.40
  6. Step 6: Final answer
    x = 376,675.20

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Double scale
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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.