Finding the Fourth Proportional to 7,166,940.16, 9,890,436 and 3,903,767.68
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Solution
The fourth proportional to 7,166,940.16, 9,890,436 and 3,903,767.68 is: 5,387,231.31
Step by Step Solution
- Step 1: Write the proportion equation
7,166,940.16 : 9,890,436 = 3,903,767.68 : x - Step 2: Convert to fraction form
7,166,940.16/9,890,436 = 3,903,767.68/x - Step 3: Cross multiply
7,166,940.16x = 9,890,436 × 3,903,767.68 - Step 4: Simplify right side
7,166,940.16x = 38,609,964,397,908.48 - Step 5: Solve for x
x = 38,609,964,397,908.48/7,166,940.16 - Step 6: Final answer
x = 5,387,231.31
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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.