Home / 721,806.30-1,082,709.45-543,347.10

Finding the Fourth Proportional to 721,806.30, 1,082,709.45 and 543,347.10

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Solution

The fourth proportional to 721,806.30, 1,082,709.45 and 543,347.10 is: 815,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,806.30 : 1,082,709.45 = 543,347.10 : x
  2. Step 2: Convert to fraction form
    721,806.30/1,082,709.45 = 543,347.10/x
  3. Step 3: Cross multiply
    721,806.30x = 1,082,709.45 × 543,347.10
  4. Step 4: Simplify right side
    721,806.30x = 588,287,039,800.10
  5. Step 5: Solve for x
    x = 588,287,039,800.10/721,806.30
  6. Step 6: Final answer
    x = 815,020.65

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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.