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Finding the Fourth Proportional to 1,328,400,295.80, 1,992,600,443.70 and 940,660,942.20

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Solution

The fourth proportional to 1,328,400,295.80, 1,992,600,443.70 and 940,660,942.20 is: 1,410,991,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,400,295.80 : 1,992,600,443.70 = 940,660,942.20 : x
  2. Step 2: Convert to fraction form
    1,328,400,295.80/1,992,600,443.70 = 940,660,942.20/x
  3. Step 3: Cross multiply
    1,328,400,295.80x = 1,992,600,443.70 × 940,660,942.20
  4. Step 4: Simplify right side
    1,328,400,295.80x = 1,874,361,410,798,980,096
  5. Step 5: Solve for x
    x = 1,874,361,410,798,980,096/1,328,400,295.80
  6. Step 6: Final answer
    x = 1,410,991,413.30

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1.5x scale

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.