Home / 839,920.40-1,259,880.60-825,923.60

Finding the Fourth Proportional to 839,920.40, 1,259,880.60 and 825,923.60

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Solution

The fourth proportional to 839,920.40, 1,259,880.60 and 825,923.60 is: 1,238,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,920.40 : 1,259,880.60 = 825,923.60 : x
  2. Step 2: Convert to fraction form
    839,920.40/1,259,880.60 = 825,923.60/x
  3. Step 3: Cross multiply
    839,920.40x = 1,259,880.60 × 825,923.60
  4. Step 4: Simplify right side
    839,920.40x = 1,040,565,120,722.16
  5. Step 5: Solve for x
    x = 1,040,565,120,722.16/839,920.40
  6. Step 6: Final answer
    x = 1,238,885.40

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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.