Finding the Fourth Proportional to 715,798.24, 987,820.44 and 393,516.46
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Solution
The fourth proportional to 715,798.24, 987,820.44 and 393,516.46 is: 543,063.09
Step by Step Solution
- Step 1: Write the proportion equation
715,798.24 : 987,820.44 = 393,516.46 : x - Step 2: Convert to fraction form
715,798.24/987,820.44 = 393,516.46/x - Step 3: Cross multiply
715,798.24x = 987,820.44 × 393,516.46 - Step 4: Simplify right side
715,798.24x = 388,723,602,664.44 - Step 5: Solve for x
x = 388,723,602,664.44/715,798.24 - Step 6: Final answer
x = 543,063.09
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1.5x scale
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.