Finding the Fourth Proportional to 690,102.60, 952,318.26 and 388,238.28
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Solution
The fourth proportional to 690,102.60, 952,318.26 and 388,238.28 is: 535,755.70
Step by Step Solution
- Step 1: Write the proportion equation
690,102.60 : 952,318.26 = 388,238.28 : x - Step 2: Convert to fraction form
690,102.60/952,318.26 = 388,238.28/x - Step 3: Cross multiply
690,102.60x = 952,318.26 × 388,238.28 - Step 4: Simplify right side
690,102.60x = 369,726,403,274.99 - Step 5: Solve for x
x = 369,726,403,274.99/690,102.60 - Step 6: Final answer
x = 535,755.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.