Home / 1,268,942.51-1,898,965.72-909,509.51

Finding the Fourth Proportional to 1,268,942.51, 1,898,965.72 and 909,509.51

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Solution

The fourth proportional to 1,268,942.51, 1,898,965.72 and 909,509.51 is: 1,361,076.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,942.51 : 1,898,965.72 = 909,509.51 : x
  2. Step 2: Convert to fraction form
    1,268,942.51/1,898,965.72 = 909,509.51/x
  3. Step 3: Cross multiply
    1,268,942.51x = 1,898,965.72 × 909,509.51
  4. Step 4: Simplify right side
    1,268,942.51x = 1,727,127,387,388.30
  5. Step 5: Solve for x
    x = 1,727,127,387,388.30/1,268,942.51
  6. Step 6: Final answer
    x = 1,361,076.15

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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.