Home / 1,986,171.40-2,979,257.10-1,277,000.20

Finding the Fourth Proportional to 1,986,171.40, 2,979,257.10 and 1,277,000.20

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Solution

The fourth proportional to 1,986,171.40, 2,979,257.10 and 1,277,000.20 is: 1,915,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,171.40 : 2,979,257.10 = 1,277,000.20 : x
  2. Step 2: Convert to fraction form
    1,986,171.40/2,979,257.10 = 1,277,000.20/x
  3. Step 3: Cross multiply
    1,986,171.40x = 2,979,257.10 × 1,277,000.20
  4. Step 4: Simplify right side
    1,986,171.40x = 3,804,511,912,551.42
  5. Step 5: Solve for x
    x = 3,804,511,912,551.42/1,986,171.40
  6. Step 6: Final answer
    x = 1,915,500.30

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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.