Finding the Fourth Proportional to 3,908,621.34, 5,393,625.20 and 2,166,273.68
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Solution
The fourth proportional to 3,908,621.34, 5,393,625.20 and 2,166,273.68 is: 2,989,306.79
Step by Step Solution
- Step 1: Write the proportion equation
3,908,621.34 : 5,393,625.20 = 2,166,273.68 : x - Step 2: Convert to fraction form
3,908,621.34/5,393,625.20 = 2,166,273.68/x - Step 3: Cross multiply
3,908,621.34x = 5,393,625.20 × 2,166,273.68 - Step 4: Simplify right side
3,908,621.34x = 11,684,068,310,544.74 - Step 5: Solve for x
x = 11,684,068,310,544.74/3,908,621.34 - Step 6: Final answer
x = 2,989,306.79
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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.