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Finding the Fourth Proportional to 1,669,908.82, 2,304,478.54 and 905,962.38

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Solution

The fourth proportional to 1,669,908.82, 2,304,478.54 and 905,962.38 is: 1,250,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,908.82 : 2,304,478.54 = 905,962.38 : x
  2. Step 2: Convert to fraction form
    1,669,908.82/2,304,478.54 = 905,962.38/x
  3. Step 3: Cross multiply
    1,669,908.82x = 2,304,478.54 × 905,962.38
  4. Step 4: Simplify right side
    1,669,908.82x = 2,087,770,862,757.33
  5. Step 5: Solve for x
    x = 2,087,770,862,757.33/1,669,908.82
  6. Step 6: Final answer
    x = 1,250,230.45

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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.