Finding the Fourth Proportional to 11,890,943.68, 16,409,412.09 and 6,458,474.56
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Solution
The fourth proportional to 11,890,943.68, 16,409,412.09 and 6,458,474.56 is: 8,912,645.91
Step by Step Solution
- Step 1: Write the proportion equation
11,890,943.68 : 16,409,412.09 = 6,458,474.56 : x - Step 2: Convert to fraction form
11,890,943.68/16,409,412.09 = 6,458,474.56/x - Step 3: Cross multiply
11,890,943.68x = 16,409,412.09 × 6,458,474.56 - Step 4: Simplify right side
11,890,943.68x = 105,979,770,527,821.42 - Step 5: Solve for x
x = 105,979,770,527,821.42/11,890,943.68 - Step 6: Final answer
x = 8,912,645.91
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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.