Home / 1,208,119.86-1,809,760.41-728,080.38

Finding the Fourth Proportional to 1,208,119.86, 1,809,760.41 and 728,080.38

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Solution

The fourth proportional to 1,208,119.86, 1,809,760.41 and 728,080.38 is: 1,090,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,119.86 : 1,809,760.41 = 728,080.38 : x
  2. Step 2: Convert to fraction form
    1,208,119.86/1,809,760.41 = 728,080.38/x
  3. Step 3: Cross multiply
    1,208,119.86x = 1,809,760.41 × 728,080.38
  4. Step 4: Simplify right side
    1,208,119.86x = 1,317,651,047,021.76
  5. Step 5: Solve for x
    x = 1,317,651,047,021.76/1,208,119.86
  6. Step 6: Final answer
    x = 1,090,662.52

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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.