Home / 1,228,846.40-1,696,292.64-1,188,987.20

Finding the Fourth Proportional to 1,228,846.40, 1,696,292.64 and 1,188,987.20

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Solution

The fourth proportional to 1,228,846.40, 1,696,292.64 and 1,188,987.20 is: 1,641,271.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,846.40 : 1,696,292.64 = 1,188,987.20 : x
  2. Step 2: Convert to fraction form
    1,228,846.40/1,696,292.64 = 1,188,987.20/x
  3. Step 3: Cross multiply
    1,228,846.40x = 1,696,292.64 × 1,188,987.20
  4. Step 4: Simplify right side
    1,228,846.40x = 2,016,870,236,414.21
  5. Step 5: Solve for x
    x = 2,016,870,236,414.21/1,228,846.40
  6. Step 6: Final answer
    x = 1,641,271.23

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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.