Home / 826,413.06-1,240,283.79-427,170.78

Finding the Fourth Proportional to 826,413.06, 1,240,283.79 and 427,170.78

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Solution

The fourth proportional to 826,413.06, 1,240,283.79 and 427,170.78 is: 641,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,413.06 : 1,240,283.79 = 427,170.78 : x
  2. Step 2: Convert to fraction form
    826,413.06/1,240,283.79 = 427,170.78/x
  3. Step 3: Cross multiply
    826,413.06x = 1,240,283.79 × 427,170.78
  4. Step 4: Simplify right side
    826,413.06x = 529,812,993,995.66
  5. Step 5: Solve for x
    x = 529,812,993,995.66/826,413.06
  6. Step 6: Final answer
    x = 641,099.49

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Double scale
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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.