Home / 805,126.91-1,207,689.57-206,087.11

Finding the Fourth Proportional to 805,126.91, 1,207,689.57 and 206,087.11

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Solution

The fourth proportional to 805,126.91, 1,207,689.57 and 206,087.11 is: 309,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,126.91 : 1,207,689.57 = 206,087.11 : x
  2. Step 2: Convert to fraction form
    805,126.91/1,207,689.57 = 206,087.11/x
  3. Step 3: Cross multiply
    805,126.91x = 1,207,689.57 × 206,087.11
  4. Step 4: Simplify right side
    805,126.91x = 248,889,253,258.44
  5. Step 5: Solve for x
    x = 248,889,253,258.44/805,126.91
  6. Step 6: Final answer
    x = 309,130.46

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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.