Home / 693,140.40-1,040,171.40-393,620.40

Finding the Fourth Proportional to 693,140.40, 1,040,171.40 and 393,620.40

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Solution

The fourth proportional to 693,140.40, 1,040,171.40 and 393,620.40 is: 590,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,140.40 : 1,040,171.40 = 393,620.40 : x
  2. Step 2: Convert to fraction form
    693,140.40/1,040,171.40 = 393,620.40/x
  3. Step 3: Cross multiply
    693,140.40x = 1,040,171.40 × 393,620.40
  4. Step 4: Simplify right side
    693,140.40x = 409,432,682,536.56
  5. Step 5: Solve for x
    x = 409,432,682,536.56/693,140.40
  6. Step 6: Final answer
    x = 590,692.28

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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.