Home / 679,715.36-1,019,398.08-280,469.60

Finding the Fourth Proportional to 679,715.36, 1,019,398.08 and 280,469.60

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Solution

The fourth proportional to 679,715.36, 1,019,398.08 and 280,469.60 is: 420,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,715.36 : 1,019,398.08 = 280,469.60 : x
  2. Step 2: Convert to fraction form
    679,715.36/1,019,398.08 = 280,469.60/x
  3. Step 3: Cross multiply
    679,715.36x = 1,019,398.08 × 280,469.60
  4. Step 4: Simplify right side
    679,715.36x = 285,910,171,738.37
  5. Step 5: Solve for x
    x = 285,910,171,738.37/679,715.36
  6. Step 6: Final answer
    x = 420,632.21

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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.