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Finding the Fourth Proportional to 839,900.40, 1,259,850.60 and 825,903.60

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Solution

The fourth proportional to 839,900.40, 1,259,850.60 and 825,903.60 is: 1,238,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,900.40 : 1,259,850.60 = 825,903.60 : x
  2. Step 2: Convert to fraction form
    839,900.40/1,259,850.60 = 825,903.60/x
  3. Step 3: Cross multiply
    839,900.40x = 1,259,850.60 × 825,903.60
  4. Step 4: Simplify right side
    839,900.40x = 1,040,515,146,002.16
  5. Step 5: Solve for x
    x = 1,040,515,146,002.16/839,900.40
  6. Step 6: Final answer
    x = 1,238,855.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.