Home / 1,326,413.89-1,990,008.35-427,835.73

Finding the Fourth Proportional to 1,326,413.89, 1,990,008.35 and 427,835.73

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Solution

The fourth proportional to 1,326,413.89, 1,990,008.35 and 427,835.73 is: 641,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,413.89 : 1,990,008.35 = 427,835.73 : x
  2. Step 2: Convert to fraction form
    1,326,413.89/1,990,008.35 = 427,835.73/x
  3. Step 3: Cross multiply
    1,326,413.89x = 1,990,008.35 × 427,835.73
  4. Step 4: Simplify right side
    1,326,413.89x = 851,396,682,056.08
  5. Step 5: Solve for x
    x = 851,396,682,056.08/1,326,413.89
  6. Step 6: Final answer
    x = 641,878.59

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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.