Home / 1,990,720,211.40-2,986,080,317.10-1,259,751,328.20

Finding the Fourth Proportional to 1,990,720,211.40, 2,986,080,317.10 and 1,259,751,328.20

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Solution

The fourth proportional to 1,990,720,211.40, 2,986,080,317.10 and 1,259,751,328.20 is: 1,889,626,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,720,211.40 : 2,986,080,317.10 = 1,259,751,328.20 : x
  2. Step 2: Convert to fraction form
    1,990,720,211.40/2,986,080,317.10 = 1,259,751,328.20/x
  3. Step 3: Cross multiply
    1,990,720,211.40x = 2,986,080,317.10 × 1,259,751,328.20
  4. Step 4: Simplify right side
    1,990,720,211.40x = 3,761,718,645,578,601,984
  5. Step 5: Solve for x
    x = 3,761,718,645,578,601,984/1,990,720,211.40
  6. Step 6: Final answer
    x = 1,889,626,992.30

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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.