Finding the Fourth Proportional to 392,409.80, 588,614.70 and 96,921.80
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Solution
The fourth proportional to 392,409.80, 588,614.70 and 96,921.80 is: 145,382.70
Step by Step Solution
- Step 1: Write the proportion equation
392,409.80 : 588,614.70 = 96,921.80 : x - Step 2: Convert to fraction form
392,409.80/588,614.70 = 96,921.80/x - Step 3: Cross multiply
392,409.80x = 588,614.70 × 96,921.80 - Step 4: Simplify right side
392,409.80x = 57,049,596,230.46 - Step 5: Solve for x
x = 57,049,596,230.46/392,409.80 - Step 6: Final answer
x = 145,382.70
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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.