Finding the Fourth Proportional to 690,597.09, 953,156.36 and 388,791.09
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Solution
The fourth proportional to 690,597.09, 953,156.36 and 388,791.09 is: 536,606.23
Step by Step Solution
- Step 1: Write the proportion equation
690,597.09 : 953,156.36 = 388,791.09 : x - Step 2: Convert to fraction form
690,597.09/953,156.36 = 388,791.09/x - Step 3: Cross multiply
690,597.09x = 953,156.36 × 388,791.09 - Step 4: Simplify right side
690,597.09x = 370,578,701,116.81 - Step 5: Solve for x
x = 370,578,701,116.81/690,597.09 - Step 6: Final answer
x = 536,606.23
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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.