Home / 805,125.91-1,207,688.07-206,086.11

Finding the Fourth Proportional to 805,125.91, 1,207,688.07 and 206,086.11

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Solution

The fourth proportional to 805,125.91, 1,207,688.07 and 206,086.11 is: 309,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,125.91 : 1,207,688.07 = 206,086.11 : x
  2. Step 2: Convert to fraction form
    805,125.91/1,207,688.07 = 206,086.11/x
  3. Step 3: Cross multiply
    805,125.91x = 1,207,688.07 × 206,086.11
  4. Step 4: Simplify right side
    805,125.91x = 248,887,736,439.71
  5. Step 5: Solve for x
    x = 248,887,736,439.71/805,125.91
  6. Step 6: Final answer
    x = 309,128.96

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Double scale
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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.