Home / 1,211,150.40-1,816,288.20-611,912.40

Finding the Fourth Proportional to 1,211,150.40, 1,816,288.20 and 611,912.40

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Solution

The fourth proportional to 1,211,150.40, 1,816,288.20 and 611,912.40 is: 917,647.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,150.40 : 1,816,288.20 = 611,912.40 : x
  2. Step 2: Convert to fraction form
    1,211,150.40/1,816,288.20 = 611,912.40/x
  3. Step 3: Cross multiply
    1,211,150.40x = 1,816,288.20 × 611,912.40
  4. Step 4: Simplify right side
    1,211,150.40x = 1,111,409,271,553.68
  5. Step 5: Solve for x
    x = 1,111,409,271,553.68/1,211,150.40
  6. Step 6: Final answer
    x = 917,647.61

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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.