Home / 547,057.20-819,929.70-280,680.60

Finding the Fourth Proportional to 547,057.20, 819,929.70 and 280,680.60

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Solution

The fourth proportional to 547,057.20, 819,929.70 and 280,680.60 is: 420,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,057.20 : 819,929.70 = 280,680.60 : x
  2. Step 2: Convert to fraction form
    547,057.20/819,929.70 = 280,680.60/x
  3. Step 3: Cross multiply
    547,057.20x = 819,929.70 × 280,680.60
  4. Step 4: Simplify right side
    547,057.20x = 230,138,360,153.82
  5. Step 5: Solve for x
    x = 230,138,360,153.82/547,057.20
  6. Step 6: Final answer
    x = 420,684.27

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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.