Home / 721,858.60-1,082,787.90-674,619.40

Finding the Fourth Proportional to 721,858.60, 1,082,787.90 and 674,619.40

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Solution

The fourth proportional to 721,858.60, 1,082,787.90 and 674,619.40 is: 1,011,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,858.60 : 1,082,787.90 = 674,619.40 : x
  2. Step 2: Convert to fraction form
    721,858.60/1,082,787.90 = 674,619.40/x
  3. Step 3: Cross multiply
    721,858.60x = 1,082,787.90 × 674,619.40
  4. Step 4: Simplify right side
    721,858.60x = 730,469,723,425.26
  5. Step 5: Solve for x
    x = 730,469,723,425.26/721,858.60
  6. Step 6: Final answer
    x = 1,011,929.10

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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.