Home / 621,069.52-931,801.20-221,701.72

Finding the Fourth Proportional to 621,069.52, 931,801.20 and 221,701.72

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Solution

The fourth proportional to 621,069.52, 931,801.20 and 221,701.72 is: 332,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,069.52 : 931,801.20 = 221,701.72 : x
  2. Step 2: Convert to fraction form
    621,069.52/931,801.20 = 221,701.72/x
  3. Step 3: Cross multiply
    621,069.52x = 931,801.20 × 221,701.72
  4. Step 4: Simplify right side
    621,069.52x = 206,581,928,738.06
  5. Step 5: Solve for x
    x = 206,581,928,738.06/621,069.52
  6. Step 6: Final answer
    x = 332,622.87

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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.