Home / 721,815.80-1,082,723.70-543,356.60

Finding the Fourth Proportional to 721,815.80, 1,082,723.70 and 543,356.60

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Solution

The fourth proportional to 721,815.80, 1,082,723.70 and 543,356.60 is: 815,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,815.80 : 1,082,723.70 = 543,356.60 : x
  2. Step 2: Convert to fraction form
    721,815.80/1,082,723.70 = 543,356.60/x
  3. Step 3: Cross multiply
    721,815.80x = 1,082,723.70 × 543,356.60
  4. Step 4: Simplify right side
    721,815.80x = 588,305,068,371.42
  5. Step 5: Solve for x
    x = 588,305,068,371.42/721,815.80
  6. Step 6: Final answer
    x = 815,034.90

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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.