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Finding the Fourth Proportional to 1,012,119.14, 1,395,819.81 and 839,764.27

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Solution

The fourth proportional to 1,012,119.14, 1,395,819.81 and 839,764.27 is: 1,158,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,119.14 : 1,395,819.81 = 839,764.27 : x
  2. Step 2: Convert to fraction form
    1,012,119.14/1,395,819.81 = 839,764.27/x
  3. Step 3: Cross multiply
    1,012,119.14x = 1,395,819.81 × 839,764.27
  4. Step 4: Simplify right side
    1,012,119.14x = 1,172,159,605,540.96
  5. Step 5: Solve for x
    x = 1,172,159,605,540.96/1,012,119.14
  6. Step 6: Final answer
    x = 1,158,124.13

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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.