Home / 1,277,413.20-1,914,491.70-678,661.20

Finding the Fourth Proportional to 1,277,413.20, 1,914,491.70 and 678,661.20

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Solution

The fourth proportional to 1,277,413.20, 1,914,491.70 and 678,661.20 is: 1,017,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,413.20 : 1,914,491.70 = 678,661.20 : x
  2. Step 2: Convert to fraction form
    1,277,413.20/1,914,491.70 = 678,661.20/x
  3. Step 3: Cross multiply
    1,277,413.20x = 1,914,491.70 × 678,661.20
  4. Step 4: Simplify right side
    1,277,413.20x = 1,299,291,234,512.04
  5. Step 5: Solve for x
    x = 1,299,291,234,512.04/1,277,413.20
  6. Step 6: Final answer
    x = 1,017,126.83

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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.