Home / 856,677.60-1,285,016.40-257,731.20

Finding the Fourth Proportional to 856,677.60, 1,285,016.40 and 257,731.20

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Solution

The fourth proportional to 856,677.60, 1,285,016.40 and 257,731.20 is: 386,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,677.60 : 1,285,016.40 = 257,731.20 : x
  2. Step 2: Convert to fraction form
    856,677.60/1,285,016.40 = 257,731.20/x
  3. Step 3: Cross multiply
    856,677.60x = 1,285,016.40 × 257,731.20
  4. Step 4: Simplify right side
    856,677.60x = 331,188,818,791.68
  5. Step 5: Solve for x
    x = 331,188,818,791.68/856,677.60
  6. Step 6: Final answer
    x = 386,596.80

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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.