Home / 678,664.20-1,017,996.30-439,163.40

Finding the Fourth Proportional to 678,664.20, 1,017,996.30 and 439,163.40

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Solution

The fourth proportional to 678,664.20, 1,017,996.30 and 439,163.40 is: 658,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,664.20 : 1,017,996.30 = 439,163.40 : x
  2. Step 2: Convert to fraction form
    678,664.20/1,017,996.30 = 439,163.40/x
  3. Step 3: Cross multiply
    678,664.20x = 1,017,996.30 × 439,163.40
  4. Step 4: Simplify right side
    678,664.20x = 447,066,716,295.42
  5. Step 5: Solve for x
    x = 447,066,716,295.42/678,664.20
  6. Step 6: Final answer
    x = 658,745.10

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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.