Home / 911,759.68-1,367,829.60-280,642.24

Finding the Fourth Proportional to 911,759.68, 1,367,829.60 and 280,642.24

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Solution

The fourth proportional to 911,759.68, 1,367,829.60 and 280,642.24 is: 421,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,759.68 : 1,367,829.60 = 280,642.24 : x
  2. Step 2: Convert to fraction form
    911,759.68/1,367,829.60 = 280,642.24/x
  3. Step 3: Cross multiply
    911,759.68x = 1,367,829.60 × 280,642.24
  4. Step 4: Simplify right side
    911,759.68x = 383,870,762,882.30
  5. Step 5: Solve for x
    x = 383,870,762,882.30/911,759.68
  6. Step 6: Final answer
    x = 421,021.87

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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.