Home / 1,990,859.40-2,993,661.90-1,666,456.20

Finding the Fourth Proportional to 1,990,859.40, 2,993,661.90 and 1,666,456.20

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Solution

The fourth proportional to 1,990,859.40, 2,993,661.90 and 1,666,456.20 is: 2,505,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,859.40 : 2,993,661.90 = 1,666,456.20 : x
  2. Step 2: Convert to fraction form
    1,990,859.40/2,993,661.90 = 1,666,456.20/x
  3. Step 3: Cross multiply
    1,990,859.40x = 2,993,661.90 × 1,666,456.20
  4. Step 4: Simplify right side
    1,990,859.40x = 4,988,806,433,958.78
  5. Step 5: Solve for x
    x = 4,988,806,433,958.78/1,990,859.40
  6. Step 6: Final answer
    x = 2,505,855.73

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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.