Home / 856,701.63-1,285,116.17-257,614.83

Finding the Fourth Proportional to 856,701.63, 1,285,116.17 and 257,614.83

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Solution

The fourth proportional to 856,701.63, 1,285,116.17 and 257,614.83 is: 386,441.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,701.63 : 1,285,116.17 = 257,614.83 : x
  2. Step 2: Convert to fraction form
    856,701.63/1,285,116.17 = 257,614.83/x
  3. Step 3: Cross multiply
    856,701.63x = 1,285,116.17 × 257,614.83
  4. Step 4: Simplify right side
    856,701.63x = 331,064,982,376.73
  5. Step 5: Solve for x
    x = 331,064,982,376.73/856,701.63
  6. Step 6: Final answer
    x = 386,441.41

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Double scale
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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.