Home / 621,046.40-931,569.60-221,700.20

Finding the Fourth Proportional to 621,046.40, 931,569.60 and 221,700.20

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Solution

The fourth proportional to 621,046.40, 931,569.60 and 221,700.20 is: 332,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,046.40 : 931,569.60 = 221,700.20 : x
  2. Step 2: Convert to fraction form
    621,046.40/931,569.60 = 221,700.20/x
  3. Step 3: Cross multiply
    621,046.40x = 931,569.60 × 221,700.20
  4. Step 4: Simplify right side
    621,046.40x = 206,529,166,633.92
  5. Step 5: Solve for x
    x = 206,529,166,633.92/621,046.40
  6. Step 6: Final answer
    x = 332,550.30

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Double scale
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Similar ratio
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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.