Home / 481,284.78-664,348.20-280,080.78

Finding the Fourth Proportional to 481,284.78, 664,348.20 and 280,080.78

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Solution

The fourth proportional to 481,284.78, 664,348.20 and 280,080.78 is: 386,613.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,284.78 : 664,348.20 = 280,080.78 : x
  2. Step 2: Convert to fraction form
    481,284.78/664,348.20 = 280,080.78/x
  3. Step 3: Cross multiply
    481,284.78x = 664,348.20 × 280,080.78
  4. Step 4: Simplify right side
    481,284.78x = 186,071,162,047.60
  5. Step 5: Solve for x
    x = 186,071,162,047.60/481,284.78
  6. Step 6: Final answer
    x = 386,613.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.