Home / 681,413.80-1,022,120.70-415,037.20

Finding the Fourth Proportional to 681,413.80, 1,022,120.70 and 415,037.20

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Solution

The fourth proportional to 681,413.80, 1,022,120.70 and 415,037.20 is: 622,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,413.80 : 1,022,120.70 = 415,037.20 : x
  2. Step 2: Convert to fraction form
    681,413.80/1,022,120.70 = 415,037.20/x
  3. Step 3: Cross multiply
    681,413.80x = 1,022,120.70 × 415,037.20
  4. Step 4: Simplify right side
    681,413.80x = 424,218,113,390.04
  5. Step 5: Solve for x
    x = 424,218,113,390.04/681,413.80
  6. Step 6: Final answer
    x = 622,555.80

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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.