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Finding the Fourth Proportional to 1,669,885.94, 2,304,447.05 and 905,939.51

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Solution

The fourth proportional to 1,669,885.94, 2,304,447.05 and 905,939.51 is: 1,250,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,885.94 : 2,304,447.05 = 905,939.51 : x
  2. Step 2: Convert to fraction form
    1,669,885.94/2,304,447.05 = 905,939.51/x
  3. Step 3: Cross multiply
    1,669,885.94x = 2,304,447.05 × 905,939.51
  4. Step 4: Simplify right side
    1,669,885.94x = 2,087,689,622,040.56
  5. Step 5: Solve for x
    x = 2,087,689,622,040.56/1,669,885.94
  6. Step 6: Final answer
    x = 1,250,198.93

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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.