Home / 1,311,121.95-1,809,347.79-767,361.27

Finding the Fourth Proportional to 1,311,121.95, 1,809,347.79 and 767,361.27

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Solution

The fourth proportional to 1,311,121.95, 1,809,347.79 and 767,361.27 is: 1,058,958.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,121.95 : 1,809,347.79 = 767,361.27 : x
  2. Step 2: Convert to fraction form
    1,311,121.95/1,809,347.79 = 767,361.27/x
  3. Step 3: Cross multiply
    1,311,121.95x = 1,809,347.79 × 767,361.27
  4. Step 4: Simplify right side
    1,311,121.95x = 1,388,423,418,006.09
  5. Step 5: Solve for x
    x = 1,388,423,418,006.09/1,311,121.95
  6. Step 6: Final answer
    x = 1,058,958.26

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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.