Home / 620,513.20-930,849.18-221,194.30

Finding the Fourth Proportional to 620,513.20, 930,849.18 and 221,194.30

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Solution

The fourth proportional to 620,513.20, 930,849.18 and 221,194.30 is: 331,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,513.20 : 930,849.18 = 221,194.30 : x
  2. Step 2: Convert to fraction form
    620,513.20/930,849.18 = 221,194.30/x
  3. Step 3: Cross multiply
    620,513.20x = 930,849.18 × 221,194.30
  4. Step 4: Simplify right side
    620,513.20x = 205,898,532,775.67
  5. Step 5: Solve for x
    x = 205,898,532,775.67/620,513.20
  6. Step 6: Final answer
    x = 331,819.75

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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.