Finding the Fourth Proportional to 3,999,121.76, 5,518,791.64 and 2,188,285.76
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Solution
The fourth proportional to 3,999,121.76, 5,518,791.64 and 2,188,285.76 is: 3,019,836.32
Step by Step Solution
- Step 1: Write the proportion equation
3,999,121.76 : 5,518,791.64 = 2,188,285.76 : x - Step 2: Convert to fraction form
3,999,121.76/5,518,791.64 = 2,188,285.76/x - Step 3: Cross multiply
3,999,121.76x = 5,518,791.64 × 2,188,285.76 - Step 4: Simplify right side
3,999,121.76x = 12,076,693,158,219.04 - Step 5: Solve for x
x = 12,076,693,158,219.04/3,999,121.76 - Step 6: Final answer
x = 3,019,836.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.