Home / 693,630.40-1,040,186.40-272,819.20

Finding the Fourth Proportional to 693,630.40, 1,040,186.40 and 272,819.20

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Solution

The fourth proportional to 693,630.40, 1,040,186.40 and 272,819.20 is: 409,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,630.40 : 1,040,186.40 = 272,819.20 : x
  2. Step 2: Convert to fraction form
    693,630.40/1,040,186.40 = 272,819.20/x
  3. Step 3: Cross multiply
    693,630.40x = 1,040,186.40 × 272,819.20
  4. Step 4: Simplify right side
    693,630.40x = 283,782,821,498.88
  5. Step 5: Solve for x
    x = 283,782,821,498.88/693,630.40
  6. Step 6: Final answer
    x = 409,126.85

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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.