Finding the Fourth Proportional to 394,436,428.19, 544,302,354.05 and 215,816,450.88
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Solution
The fourth proportional to 394,436,428.19, 544,302,354.05 and 215,816,450.88 is: 297,815,804.68
Step by Step Solution
- Step 1: Write the proportion equation
394,436,428.19 : 544,302,354.05 = 215,816,450.88 : x - Step 2: Convert to fraction form
394,436,428.19/544,302,354.05 = 215,816,450.88/x - Step 3: Cross multiply
394,436,428.19x = 544,302,354.05 × 215,816,450.88 - Step 4: Simplify right side
394,436,428.19x = 117,469,402,255,621,104 - Step 5: Solve for x
x = 117,469,402,255,621,104/394,436,428.19 - Step 6: Final answer
x = 297,815,804.68
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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.