Home / 748,413.80-1,122,620.70-659,840.30

Finding the Fourth Proportional to 748,413.80, 1,122,620.70 and 659,840.30

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Solution

The fourth proportional to 748,413.80, 1,122,620.70 and 659,840.30 is: 989,760.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,413.80 : 1,122,620.70 = 659,840.30 : x
  2. Step 2: Convert to fraction form
    748,413.80/1,122,620.70 = 659,840.30/x
  3. Step 3: Cross multiply
    748,413.80x = 1,122,620.70 × 659,840.30
  4. Step 4: Simplify right side
    748,413.80x = 740,750,379,474.21
  5. Step 5: Solve for x
    x = 740,750,379,474.21/748,413.80
  6. Step 6: Final answer
    x = 989,760.45

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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.