Finding the Fourth Proportional to 714,979.37, 986,668.16 and 388,290.09
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Solution
The fourth proportional to 714,979.37, 986,668.16 and 388,290.09 is: 535,838.49
Step by Step Solution
- Step 1: Write the proportion equation
714,979.37 : 986,668.16 = 388,290.09 : x - Step 2: Convert to fraction form
714,979.37/986,668.16 = 388,290.09/x - Step 3: Cross multiply
714,979.37x = 986,668.16 × 388,290.09 - Step 4: Simplify right side
714,979.37x = 383,113,466,705.08 - Step 5: Solve for x
x = 383,113,466,705.08/714,979.37 - Step 6: Final answer
x = 535,838.49
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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.