Finding the Fourth Proportional to 7,178,674.07, 9,906,687.03 and 3,915,487.97
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Solution
The fourth proportional to 7,178,674.07, 9,906,687.03 and 3,915,487.97 is: 5,403,437.12
Step by Step Solution
- Step 1: Write the proportion equation
7,178,674.07 : 9,906,687.03 = 3,915,487.97 : x - Step 2: Convert to fraction form
7,178,674.07/9,906,687.03 = 3,915,487.97/x - Step 3: Cross multiply
7,178,674.07x = 9,906,687.03 × 3,915,487.97 - Step 4: Simplify right side
7,178,674.07x = 38,789,513,924,520.24 - Step 5: Solve for x
x = 38,789,513,924,520.24/7,178,674.07 - Step 6: Final answer
x = 5,403,437.12
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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.