Home / 1,489,187.68-2,055,069.20-810,126.88

Finding the Fourth Proportional to 1,489,187.68, 2,055,069.20 and 810,126.88

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Solution

The fourth proportional to 1,489,187.68, 2,055,069.20 and 810,126.88 is: 1,117,969.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,187.68 : 2,055,069.20 = 810,126.88 : x
  2. Step 2: Convert to fraction form
    1,489,187.68/2,055,069.20 = 810,126.88/x
  3. Step 3: Cross multiply
    1,489,187.68x = 2,055,069.20 × 810,126.88
  4. Step 4: Simplify right side
    1,489,187.68x = 1,664,866,799,180.10
  5. Step 5: Solve for x
    x = 1,664,866,799,180.10/1,489,187.68
  6. Step 6: Final answer
    x = 1,117,969.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.