Finding the Fourth Proportional to 987,411.09, 1,481,105.70 and 313,474.28
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Solution
The fourth proportional to 987,411.09, 1,481,105.70 and 313,474.28 is: 470,207.95
Step by Step Solution
- Step 1: Write the proportion equation
987,411.09 : 1,481,105.70 = 313,474.28 : x - Step 2: Convert to fraction form
987,411.09/1,481,105.70 = 313,474.28/x - Step 3: Cross multiply
987,411.09x = 1,481,105.70 × 313,474.28 - Step 4: Simplify right side
987,411.09x = 464,288,542,911.40 - Step 5: Solve for x
x = 464,288,542,911.40/987,411.09 - Step 6: Final answer
x = 470,207.95
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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.