Home / 2,105,679.60-3,158,519.40-685,879.20

Finding the Fourth Proportional to 2,105,679.60, 3,158,519.40 and 685,879.20

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Solution

The fourth proportional to 2,105,679.60, 3,158,519.40 and 685,879.20 is: 1,028,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105,679.60 : 3,158,519.40 = 685,879.20 : x
  2. Step 2: Convert to fraction form
    2,105,679.60/3,158,519.40 = 685,879.20/x
  3. Step 3: Cross multiply
    2,105,679.60x = 3,158,519.40 × 685,879.20
  4. Step 4: Simplify right side
    2,105,679.60x = 2,166,362,759,256.48
  5. Step 5: Solve for x
    x = 2,166,362,759,256.48/2,105,679.60
  6. Step 6: Final answer
    x = 1,028,818.80

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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.