Finding the Fourth Proportional to 690,716.70, 1,035,812.61 and 330,517.80
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Solution
The fourth proportional to 690,716.70, 1,035,812.61 and 330,517.80 is: 495,651.12
Step by Step Solution
- Step 1: Write the proportion equation
690,716.70 : 1,035,812.61 = 330,517.80 : x - Step 2: Convert to fraction form
690,716.70/1,035,812.61 = 330,517.80/x - Step 3: Cross multiply
690,716.70x = 1,035,812.61 × 330,517.80 - Step 4: Simplify right side
690,716.70x = 342,354,505,069.46 - Step 5: Solve for x
x = 342,354,505,069.46/690,716.70 - Step 6: Final answer
x = 495,651.12
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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.