Home / 1,915,131.12-2,642,889.60-1,055,672.88

Finding the Fourth Proportional to 1,915,131.12, 2,642,889.60 and 1,055,672.88

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Solution

The fourth proportional to 1,915,131.12, 2,642,889.60 and 1,055,672.88 is: 1,456,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,131.12 : 2,642,889.60 = 1,055,672.88 : x
  2. Step 2: Convert to fraction form
    1,915,131.12/2,642,889.60 = 1,055,672.88/x
  3. Step 3: Cross multiply
    1,915,131.12x = 2,642,889.60 × 1,055,672.88
  4. Step 4: Simplify right side
    1,915,131.12x = 2,790,026,875,554.05
  5. Step 5: Solve for x
    x = 2,790,026,875,554.05/1,915,131.12
  6. Step 6: Final answer
    x = 1,456,833.34

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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.