Finding the Fourth Proportional to 987,674.18, 1,481,477.68 and 418,689.23
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Solution
The fourth proportional to 987,674.18, 1,481,477.68 and 418,689.23 is: 628,019.60
Step by Step Solution
- Step 1: Write the proportion equation
987,674.18 : 1,481,477.68 = 418,689.23 : x - Step 2: Convert to fraction form
987,674.18/1,481,477.68 = 418,689.23/x - Step 3: Cross multiply
987,674.18x = 1,481,477.68 × 418,689.23 - Step 4: Simplify right side
987,674.18x = 620,278,739,600.55 - Step 5: Solve for x
x = 620,278,739,600.55/987,674.18 - Step 6: Final answer
x = 628,019.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.