Home / 679,872.69-1,019,663.24-280,409.85

Finding the Fourth Proportional to 679,872.69, 1,019,663.24 and 280,409.85

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Solution

The fourth proportional to 679,872.69, 1,019,663.24 and 280,409.85 is: 420,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,872.69 : 1,019,663.24 = 280,409.85 : x
  2. Step 2: Convert to fraction form
    679,872.69/1,019,663.24 = 280,409.85/x
  3. Step 3: Cross multiply
    679,872.69x = 1,019,663.24 × 280,409.85
  4. Step 4: Simplify right side
    679,872.69x = 285,923,614,776.87
  5. Step 5: Solve for x
    x = 285,923,614,776.87/679,872.69
  6. Step 6: Final answer
    x = 420,554.64

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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.