Home / 721,806.80-1,082,710.20-543,347.60

Finding the Fourth Proportional to 721,806.80, 1,082,710.20 and 543,347.60

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Solution

The fourth proportional to 721,806.80, 1,082,710.20 and 543,347.60 is: 815,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,806.80 : 1,082,710.20 = 543,347.60 : x
  2. Step 2: Convert to fraction form
    721,806.80/1,082,710.20 = 543,347.60/x
  3. Step 3: Cross multiply
    721,806.80x = 1,082,710.20 × 543,347.60
  4. Step 4: Simplify right side
    721,806.80x = 588,287,988,665.52
  5. Step 5: Solve for x
    x = 588,287,988,665.52/721,806.80
  6. Step 6: Final answer
    x = 815,021.40

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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.