Home / 1,012,143.72-1,395,853.68-839,788.80

Finding the Fourth Proportional to 1,012,143.72, 1,395,853.68 and 839,788.80

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Solution

The fourth proportional to 1,012,143.72, 1,395,853.68 and 839,788.80 is: 1,158,157.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,143.72 : 1,395,853.68 = 839,788.80 : x
  2. Step 2: Convert to fraction form
    1,012,143.72/1,395,853.68 = 839,788.80/x
  3. Step 3: Cross multiply
    1,012,143.72x = 1,395,853.68 × 839,788.80
  4. Step 4: Simplify right side
    1,012,143.72x = 1,172,222,286,902.78
  5. Step 5: Solve for x
    x = 1,172,222,286,902.78/1,012,143.72
  6. Step 6: Final answer
    x = 1,158,157.94

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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.