Finding the Fourth Proportional to 621,609,716.28, 857,816,147.26 and 343,145,261.10
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Solution
The fourth proportional to 621,609,716.28, 857,816,147.26 and 343,145,261.10 is: 473,537,555.99
Step by Step Solution
- Step 1: Write the proportion equation
621,609,716.28 : 857,816,147.26 = 343,145,261.10 : x - Step 2: Convert to fraction form
621,609,716.28/857,816,147.26 = 343,145,261.10/x - Step 3: Cross multiply
621,609,716.28x = 857,816,147.26 × 343,145,261.10 - Step 4: Simplify right side
621,609,716.28x = 294,355,545,827,328,768 - Step 5: Solve for x
x = 294,355,545,827,328,768/621,609,716.28 - Step 6: Final answer
x = 473,537,555.99
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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.