Home / 693,121.20-1,039,714.20-219,843.60

Finding the Fourth Proportional to 693,121.20, 1,039,714.20 and 219,843.60

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Solution

The fourth proportional to 693,121.20, 1,039,714.20 and 219,843.60 is: 329,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,121.20 : 1,039,714.20 = 219,843.60 : x
  2. Step 2: Convert to fraction form
    693,121.20/1,039,714.20 = 219,843.60/x
  3. Step 3: Cross multiply
    693,121.20x = 1,039,714.20 × 219,843.60
  4. Step 4: Simplify right side
    693,121.20x = 228,574,512,699.12
  5. Step 5: Solve for x
    x = 228,574,512,699.12/693,121.20
  6. Step 6: Final answer
    x = 329,775.68

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1.5x scale

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.