Home / 1,821,814.80-2,728,348.20-978,507.60

Finding the Fourth Proportional to 1,821,814.80, 2,728,348.20 and 978,507.60

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Solution

The fourth proportional to 1,821,814.80, 2,728,348.20 and 978,507.60 is: 1,465,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,814.80 : 2,728,348.20 = 978,507.60 : x
  2. Step 2: Convert to fraction form
    1,821,814.80/2,728,348.20 = 978,507.60/x
  3. Step 3: Cross multiply
    1,821,814.80x = 2,728,348.20 × 978,507.60
  4. Step 4: Simplify right side
    1,821,814.80x = 2,669,709,449,146.32
  5. Step 5: Solve for x
    x = 2,669,709,449,146.32/1,821,814.80
  6. Step 6: Final answer
    x = 1,465,412.10

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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.