Home / 1,991,323.20-2,979,111.60-1,728,008.40

Finding the Fourth Proportional to 1,991,323.20, 2,979,111.60 and 1,728,008.40

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Solution

The fourth proportional to 1,991,323.20, 2,979,111.60 and 1,728,008.40 is: 2,585,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,323.20 : 2,979,111.60 = 1,728,008.40 : x
  2. Step 2: Convert to fraction form
    1,991,323.20/2,979,111.60 = 1,728,008.40/x
  3. Step 3: Cross multiply
    1,991,323.20x = 2,979,111.60 × 1,728,008.40
  4. Step 4: Simplify right side
    1,991,323.20x = 5,147,929,869,337.44
  5. Step 5: Solve for x
    x = 5,147,929,869,337.44/1,991,323.20
  6. Step 6: Final answer
    x = 2,585,180.48

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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.