Home / 1,382,909.78-1,904,072.81-1,175,770.78

Finding the Fourth Proportional to 1,382,909.78, 1,904,072.81 and 1,175,770.78

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Solution

The fourth proportional to 1,382,909.78, 1,904,072.81 and 1,175,770.78 is: 1,618,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,909.78 : 1,904,072.81 = 1,175,770.78 : x
  2. Step 2: Convert to fraction form
    1,382,909.78/1,904,072.81 = 1,175,770.78/x
  3. Step 3: Cross multiply
    1,382,909.78x = 1,904,072.81 × 1,175,770.78
  4. Step 4: Simplify right side
    1,382,909.78x = 2,238,753,162,351.46
  5. Step 5: Solve for x
    x = 2,238,753,162,351.46/1,382,909.78
  6. Step 6: Final answer
    x = 1,618,871.45

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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.