Finding the Fourth Proportional to 393,660,836.69, 543,268,458.74 and 226,397,228.51
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Solution
The fourth proportional to 393,660,836.69, 543,268,458.74 and 226,397,228.51 is: 312,437,666.99
Step by Step Solution
- Step 1: Write the proportion equation
393,660,836.69 : 543,268,458.74 = 226,397,228.51 : x - Step 2: Convert to fraction form
393,660,836.69/543,268,458.74 = 226,397,228.51/x - Step 3: Cross multiply
393,660,836.69x = 543,268,458.74 × 226,397,228.51 - Step 4: Simplify right side
393,660,836.69x = 122,994,473,397,559,440 - Step 5: Solve for x
x = 122,994,473,397,559,440/393,660,836.69 - Step 6: Final answer
x = 312,437,666.99
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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.