Home / 1,991,629.40-2,983,880.10-1,211,221.40

Finding the Fourth Proportional to 1,991,629.40, 2,983,880.10 and 1,211,221.40

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Solution

The fourth proportional to 1,991,629.40, 2,983,880.10 and 1,211,221.40 is: 1,814,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,629.40 : 2,983,880.10 = 1,211,221.40 : x
  2. Step 2: Convert to fraction form
    1,991,629.40/2,983,880.10 = 1,211,221.40/x
  3. Step 3: Cross multiply
    1,991,629.40x = 2,983,880.10 × 1,211,221.40
  4. Step 4: Simplify right side
    1,991,629.40x = 3,614,139,432,154.14
  5. Step 5: Solve for x
    x = 3,614,139,432,154.14/1,991,629.40
  6. Step 6: Final answer
    x = 1,814,664.63

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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.