Home / 925,540.20-1,387,654.20-420,343.20

Finding the Fourth Proportional to 925,540.20, 1,387,654.20 and 420,343.20

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Solution

The fourth proportional to 925,540.20, 1,387,654.20 and 420,343.20 is: 630,216.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,540.20 : 1,387,654.20 = 420,343.20 : x
  2. Step 2: Convert to fraction form
    925,540.20/1,387,654.20 = 420,343.20/x
  3. Step 3: Cross multiply
    925,540.20x = 1,387,654.20 × 420,343.20
  4. Step 4: Simplify right side
    925,540.20x = 583,291,006,921.44
  5. Step 5: Solve for x
    x = 583,291,006,921.44/925,540.20
  6. Step 6: Final answer
    x = 630,216.83

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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.