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Finding the Fourth Proportional to 919,608.76, 1,379,413.68 and 254,760.76

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Solution

The fourth proportional to 919,608.76, 1,379,413.68 and 254,760.76 is: 382,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,608.76 : 1,379,413.68 = 254,760.76 : x
  2. Step 2: Convert to fraction form
    919,608.76/1,379,413.68 = 254,760.76/x
  3. Step 3: Cross multiply
    919,608.76x = 1,379,413.68 × 254,760.76
  4. Step 4: Simplify right side
    919,608.76x = 351,420,477,471.20
  5. Step 5: Solve for x
    x = 351,420,477,471.20/919,608.76
  6. Step 6: Final answer
    x = 382,141.29

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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.