Home / 1,969,109.80-2,953,664.70-639,413.80

Finding the Fourth Proportional to 1,969,109.80, 2,953,664.70 and 639,413.80

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Solution

The fourth proportional to 1,969,109.80, 2,953,664.70 and 639,413.80 is: 959,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969,109.80 : 2,953,664.70 = 639,413.80 : x
  2. Step 2: Convert to fraction form
    1,969,109.80/2,953,664.70 = 639,413.80/x
  3. Step 3: Cross multiply
    1,969,109.80x = 2,953,664.70 × 639,413.80
  4. Step 4: Simplify right side
    1,969,109.80x = 1,888,613,969,752.86
  5. Step 5: Solve for x
    x = 1,888,613,969,752.86/1,969,109.80
  6. Step 6: Final answer
    x = 959,120.70

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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.