Home / 1,040,311.20-1,560,855.60-409,664.64

Finding the Fourth Proportional to 1,040,311.20, 1,560,855.60 and 409,664.64

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Solution

The fourth proportional to 1,040,311.20, 1,560,855.60 and 409,664.64 is: 614,650.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,311.20 : 1,560,855.60 = 409,664.64 : x
  2. Step 2: Convert to fraction form
    1,040,311.20/1,560,855.60 = 409,664.64/x
  3. Step 3: Cross multiply
    1,040,311.20x = 1,560,855.60 × 409,664.64
  4. Step 4: Simplify right side
    1,040,311.20x = 639,427,347,465.98
  5. Step 5: Solve for x
    x = 639,427,347,465.98/1,040,311.20
  6. Step 6: Final answer
    x = 614,650.07

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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.