Home / 826,742.80-1,240,114.20-543,307.60

Finding the Fourth Proportional to 826,742.80, 1,240,114.20 and 543,307.60

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Solution

The fourth proportional to 826,742.80, 1,240,114.20 and 543,307.60 is: 814,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,742.80 : 1,240,114.20 = 543,307.60 : x
  2. Step 2: Convert to fraction form
    826,742.80/1,240,114.20 = 543,307.60/x
  3. Step 3: Cross multiply
    826,742.80x = 1,240,114.20 × 543,307.60
  4. Step 4: Simplify right side
    826,742.80x = 673,763,469,727.92
  5. Step 5: Solve for x
    x = 673,763,469,727.92/826,742.80
  6. Step 6: Final answer
    x = 814,961.40

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Double scale
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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.