Home / 1,990,912.40-2,993,741.40-1,666,509.20

Finding the Fourth Proportional to 1,990,912.40, 2,993,741.40 and 1,666,509.20

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Solution

The fourth proportional to 1,990,912.40, 2,993,741.40 and 1,666,509.20 is: 2,505,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,912.40 : 2,993,741.40 = 1,666,509.20 : x
  2. Step 2: Convert to fraction form
    1,990,912.40/2,993,741.40 = 1,666,509.20/x
  3. Step 3: Cross multiply
    1,990,912.40x = 2,993,741.40 × 1,666,509.20
  4. Step 4: Simplify right side
    1,990,912.40x = 4,989,097,585,520.88
  5. Step 5: Solve for x
    x = 4,989,097,585,520.88/1,990,912.40
  6. Step 6: Final answer
    x = 2,505,935.26

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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.