Home / 679,869.10-1,019,919.83-280,291.44

Finding the Fourth Proportional to 679,869.10, 1,019,919.83 and 280,291.44

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Solution

The fourth proportional to 679,869.10, 1,019,919.83 and 280,291.44 is: 420,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,869.10 : 1,019,919.83 = 280,291.44 : x
  2. Step 2: Convert to fraction form
    679,869.10/1,019,919.83 = 280,291.44/x
  3. Step 3: Cross multiply
    679,869.10x = 1,019,919.83 × 280,291.44
  4. Step 4: Simplify right side
    679,869.10x = 285,874,797,835.26
  5. Step 5: Solve for x
    x = 285,874,797,835.26/679,869.10
  6. Step 6: Final answer
    x = 420,485.06

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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.