Home / 1,085,994.80-1,628,992.20-685,336.40

Finding the Fourth Proportional to 1,085,994.80, 1,628,992.20 and 685,336.40

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Solution

The fourth proportional to 1,085,994.80, 1,628,992.20 and 685,336.40 is: 1,028,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,994.80 : 1,628,992.20 = 685,336.40 : x
  2. Step 2: Convert to fraction form
    1,085,994.80/1,628,992.20 = 685,336.40/x
  3. Step 3: Cross multiply
    1,085,994.80x = 1,628,992.20 × 685,336.40
  4. Step 4: Simplify right side
    1,085,994.80x = 1,116,407,649,976.08
  5. Step 5: Solve for x
    x = 1,116,407,649,976.08/1,085,994.80
  6. Step 6: Final answer
    x = 1,028,004.60

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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.