Home / 686,020.10-1,028,631.21-259,588.85

Finding the Fourth Proportional to 686,020.10, 1,028,631.21 and 259,588.85

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Solution

The fourth proportional to 686,020.10, 1,028,631.21 and 259,588.85 is: 389,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,020.10 : 1,028,631.21 = 259,588.85 : x
  2. Step 2: Convert to fraction form
    686,020.10/1,028,631.21 = 259,588.85/x
  3. Step 3: Cross multiply
    686,020.10x = 1,028,631.21 × 259,588.85
  4. Step 4: Simplify right side
    686,020.10x = 267,021,192,878.01
  5. Step 5: Solve for x
    x = 267,021,192,878.01/686,020.10
  6. Step 6: Final answer
    x = 389,232.32

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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.