Finding the Fourth Proportional to 3,908,463.96, 5,393,680.80 and 2,166,245.84
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Solution
The fourth proportional to 3,908,463.96, 5,393,680.80 and 2,166,245.84 is: 2,989,419.56
Step by Step Solution
- Step 1: Write the proportion equation
3,908,463.96 : 5,393,680.80 = 2,166,245.84 : x - Step 2: Convert to fraction form
3,908,463.96/5,393,680.80 = 2,166,245.84/x - Step 3: Cross multiply
3,908,463.96x = 5,393,680.80 × 2,166,245.84 - Step 4: Simplify right side
3,908,463.96x = 11,684,038,595,287.87 - Step 5: Solve for x
x = 11,684,038,595,287.87/3,908,463.96 - Step 6: Final answer
x = 2,989,419.56
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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.