Home / 911,391.35-1,367,108.89-280,310.63

Finding the Fourth Proportional to 911,391.35, 1,367,108.89 and 280,310.63

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Solution

The fourth proportional to 911,391.35, 1,367,108.89 and 280,310.63 is: 420,472.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,391.35 : 1,367,108.89 = 280,310.63 : x
  2. Step 2: Convert to fraction form
    911,391.35/1,367,108.89 = 280,310.63/x
  3. Step 3: Cross multiply
    911,391.35x = 1,367,108.89 × 280,310.63
  4. Step 4: Simplify right side
    911,391.35x = 383,215,146,698.18
  5. Step 5: Solve for x
    x = 383,215,146,698.18/911,391.35
  6. Step 6: Final answer
    x = 420,472.66

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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.