Home / 686,394.56-1,028,982.72-259,632.38

Finding the Fourth Proportional to 686,394.56, 1,028,982.72 and 259,632.38

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Solution

The fourth proportional to 686,394.56, 1,028,982.72 and 259,632.38 is: 389,218.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,394.56 : 1,028,982.72 = 259,632.38 : x
  2. Step 2: Convert to fraction form
    686,394.56/1,028,982.72 = 259,632.38/x
  3. Step 3: Cross multiply
    686,394.56x = 1,028,982.72 × 259,632.38
  4. Step 4: Simplify right side
    686,394.56x = 267,157,232,572.47
  5. Step 5: Solve for x
    x = 267,157,232,572.47/686,394.56
  6. Step 6: Final answer
    x = 389,218.17

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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.