Home / 621,244.80-931,867.20-221,898.60

Finding the Fourth Proportional to 621,244.80, 931,867.20 and 221,898.60

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Solution

The fourth proportional to 621,244.80, 931,867.20 and 221,898.60 is: 332,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,244.80 : 931,867.20 = 221,898.60 : x
  2. Step 2: Convert to fraction form
    621,244.80/931,867.20 = 221,898.60/x
  3. Step 3: Cross multiply
    621,244.80x = 931,867.20 × 221,898.60
  4. Step 4: Simplify right side
    621,244.80x = 206,780,027,065.92
  5. Step 5: Solve for x
    x = 206,780,027,065.92/621,244.80
  6. Step 6: Final answer
    x = 332,847.90

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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.