Home / 1,215,200.40-1,822,800.60-416,489.79

Finding the Fourth Proportional to 1,215,200.40, 1,822,800.60 and 416,489.79

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Solution

The fourth proportional to 1,215,200.40, 1,822,800.60 and 416,489.79 is: 624,734.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,200.40 : 1,822,800.60 = 416,489.79 : x
  2. Step 2: Convert to fraction form
    1,215,200.40/1,822,800.60 = 416,489.79/x
  3. Step 3: Cross multiply
    1,215,200.40x = 1,822,800.60 × 416,489.79
  4. Step 4: Simplify right side
    1,215,200.40x = 759,177,839,105.87
  5. Step 5: Solve for x
    x = 759,177,839,105.87/1,215,200.40
  6. Step 6: Final answer
    x = 624,734.69

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Double scale
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Similar ratio
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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.