Home / 1,386,185.28-1,912,920.73-774,399.36

Finding the Fourth Proportional to 1,386,185.28, 1,912,920.73 and 774,399.36

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Solution

The fourth proportional to 1,386,185.28, 1,912,920.73 and 774,399.36 is: 1,068,662.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,185.28 : 1,912,920.73 = 774,399.36 : x
  2. Step 2: Convert to fraction form
    1,386,185.28/1,912,920.73 = 774,399.36/x
  3. Step 3: Cross multiply
    1,386,185.28x = 1,912,920.73 × 774,399.36
  4. Step 4: Simplify right side
    1,386,185.28x = 1,481,364,589,042.73
  5. Step 5: Solve for x
    x = 1,481,364,589,042.73/1,386,185.28
  6. Step 6: Final answer
    x = 1,068,662.76

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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.