Finding the Fourth Proportional to 12,391,445.28, 18,579,950.82 and 4,809,553.68
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Solution
The fourth proportional to 12,391,445.28, 18,579,950.82 and 4,809,553.68 is: 7,211,529.31
Step by Step Solution
- Step 1: Write the proportion equation
12,391,445.28 : 18,579,950.82 = 4,809,553.68 : x - Step 2: Convert to fraction form
12,391,445.28/18,579,950.82 = 4,809,553.68/x - Step 3: Cross multiply
12,391,445.28x = 18,579,950.82 × 4,809,553.68 - Step 4: Simplify right side
12,391,445.28x = 89,361,270,840,550.02 - Step 5: Solve for x
x = 89,361,270,840,550.02/12,391,445.28 - Step 6: Final answer
x = 7,211,529.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.