Home / 1,211,817.74-1,818,141.83-413,659.78

Finding the Fourth Proportional to 1,211,817.74, 1,818,141.83 and 413,659.78

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Solution

The fourth proportional to 1,211,817.74, 1,818,141.83 and 413,659.78 is: 620,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,817.74 : 1,818,141.83 = 413,659.78 : x
  2. Step 2: Convert to fraction form
    1,211,817.74/1,818,141.83 = 413,659.78/x
  3. Step 3: Cross multiply
    1,211,817.74x = 1,818,141.83 × 413,659.78
  4. Step 4: Simplify right side
    1,211,817.74x = 752,092,149,406.60
  5. Step 5: Solve for x
    x = 752,092,149,406.60/1,211,817.74
  6. Step 6: Final answer
    x = 620,631.41

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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.