Home / 1,368,413.20-2,052,425.40-421,879.60

Finding the Fourth Proportional to 1,368,413.20, 2,052,425.40 and 421,879.60

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Solution

The fourth proportional to 1,368,413.20, 2,052,425.40 and 421,879.60 is: 632,759.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,413.20 : 2,052,425.40 = 421,879.60 : x
  2. Step 2: Convert to fraction form
    1,368,413.20/2,052,425.40 = 421,879.60/x
  3. Step 3: Cross multiply
    1,368,413.20x = 2,052,425.40 × 421,879.60
  4. Step 4: Simplify right side
    1,368,413.20x = 865,876,406,781.84
  5. Step 5: Solve for x
    x = 865,876,406,781.84/1,368,413.20
  6. Step 6: Final answer
    x = 632,759.47

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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.