Home / 1,326,550.80-1,990,603.80-485,187.60

Finding the Fourth Proportional to 1,326,550.80, 1,990,603.80 and 485,187.60

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Solution

The fourth proportional to 1,326,550.80, 1,990,603.80 and 485,187.60 is: 728,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,550.80 : 1,990,603.80 = 485,187.60 : x
  2. Step 2: Convert to fraction form
    1,326,550.80/1,990,603.80 = 485,187.60/x
  3. Step 3: Cross multiply
    1,326,550.80x = 1,990,603.80 × 485,187.60
  4. Step 4: Simplify right side
    1,326,550.80x = 965,816,280,272.88
  5. Step 5: Solve for x
    x = 965,816,280,272.88/1,326,550.80
  6. Step 6: Final answer
    x = 728,065.81

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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.