Home / 1,207,145.44-1,665,236.04-819,980.80

Finding the Fourth Proportional to 1,207,145.44, 1,665,236.04 and 819,980.80

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Solution

The fourth proportional to 1,207,145.44, 1,665,236.04 and 819,980.80 is: 1,131,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,145.44 : 1,665,236.04 = 819,980.80 : x
  2. Step 2: Convert to fraction form
    1,207,145.44/1,665,236.04 = 819,980.80/x
  3. Step 3: Cross multiply
    1,207,145.44x = 1,665,236.04 × 819,980.80
  4. Step 4: Simplify right side
    1,207,145.44x = 1,365,461,580,268.03
  5. Step 5: Solve for x
    x = 1,365,461,580,268.03/1,207,145.44
  6. Step 6: Final answer
    x = 1,131,149.18

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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.