Finding the Fourth Proportional to 621,609,715.27, 857,816,145.89 and 343,145,260.09
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Solution
The fourth proportional to 621,609,715.27, 857,816,145.89 and 343,145,260.09 is: 473,537,554.61
Step by Step Solution
- Step 1: Write the proportion equation
621,609,715.27 : 857,816,145.89 = 343,145,260.09 : x - Step 2: Convert to fraction form
621,609,715.27/857,816,145.89 = 343,145,260.09/x - Step 3: Cross multiply
621,609,715.27x = 857,816,145.89 × 343,145,260.09 - Step 4: Simplify right side
621,609,715.27x = 294,355,544,489,109,696 - Step 5: Solve for x
x = 294,355,544,489,109,696/621,609,715.27 - Step 6: Final answer
x = 473,537,554.61
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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.