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Finding the Fourth Proportional to 548,440.40, 822,046.20 and 311,896.40

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Solution

The fourth proportional to 548,440.40, 822,046.20 and 311,896.40 is: 467,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,440.40 : 822,046.20 = 311,896.40 : x
  2. Step 2: Convert to fraction form
    548,440.40/822,046.20 = 311,896.40/x
  3. Step 3: Cross multiply
    548,440.40x = 822,046.20 × 311,896.40
  4. Step 4: Simplify right side
    548,440.40x = 256,393,250,413.68
  5. Step 5: Solve for x
    x = 256,393,250,413.68/548,440.40
  6. Step 6: Final answer
    x = 467,495.19

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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.