Home / 1,979,728.80-2,969,593.20-1,271,140.80

Finding the Fourth Proportional to 1,979,728.80, 2,969,593.20 and 1,271,140.80

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Solution

The fourth proportional to 1,979,728.80, 2,969,593.20 and 1,271,140.80 is: 1,906,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,728.80 : 2,969,593.20 = 1,271,140.80 : x
  2. Step 2: Convert to fraction form
    1,979,728.80/2,969,593.20 = 1,271,140.80/x
  3. Step 3: Cross multiply
    1,979,728.80x = 2,969,593.20 × 1,271,140.80
  4. Step 4: Simplify right side
    1,979,728.80x = 3,774,771,075,922.56
  5. Step 5: Solve for x
    x = 3,774,771,075,922.56/1,979,728.80
  6. Step 6: Final answer
    x = 1,906,711.20

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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.