Finding the Fourth Proportional to 715,734.84, 987,717.28 and 393,465.70
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Solution
The fourth proportional to 715,734.84, 987,717.28 and 393,465.70 is: 542,984.43
Step by Step Solution
- Step 1: Write the proportion equation
715,734.84 : 987,717.28 = 393,465.70 : x - Step 2: Convert to fraction form
715,734.84/987,717.28 = 393,465.70/x - Step 3: Cross multiply
715,734.84x = 987,717.28 × 393,465.70 - Step 4: Simplify right side
715,734.84x = 388,632,870,977.30 - Step 5: Solve for x
x = 388,632,870,977.30/715,734.84 - Step 6: Final answer
x = 542,984.43
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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.