Home / 1,290,406.24-1,780,860.36-774,179.56

Finding the Fourth Proportional to 1,290,406.24, 1,780,860.36 and 774,179.56

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Solution

The fourth proportional to 1,290,406.24, 1,780,860.36 and 774,179.56 is: 1,068,427.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,406.24 : 1,780,860.36 = 774,179.56 : x
  2. Step 2: Convert to fraction form
    1,290,406.24/1,780,860.36 = 774,179.56/x
  3. Step 3: Cross multiply
    1,290,406.24x = 1,780,860.36 × 774,179.56
  4. Step 4: Simplify right side
    1,290,406.24x = 1,378,705,689,926.24
  5. Step 5: Solve for x
    x = 1,378,705,689,926.24/1,290,406.24
  6. Step 6: Final answer
    x = 1,068,427.64

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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.