Home / 1,382,974.92-1,908,525.78-771,109.56

Finding the Fourth Proportional to 1,382,974.92, 1,908,525.78 and 771,109.56

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Solution

The fourth proportional to 1,382,974.92, 1,908,525.78 and 771,109.56 is: 1,064,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,974.92 : 1,908,525.78 = 771,109.56 : x
  2. Step 2: Convert to fraction form
    1,382,974.92/1,908,525.78 = 771,109.56/x
  3. Step 3: Cross multiply
    1,382,974.92x = 1,908,525.78 × 771,109.56
  4. Step 4: Simplify right side
    1,382,974.92x = 1,471,682,474,464.46
  5. Step 5: Solve for x
    x = 1,471,682,474,464.46/1,382,974.92
  6. Step 6: Final answer
    x = 1,064,142.56

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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.