Finding the Fourth Proportional to 485,215,418.91, 727,082,517.72 and 288,090,653.63
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Solution
The fourth proportional to 485,215,418.91, 727,082,517.72 and 288,090,653.63 is: 431,696,252.03
Step by Step Solution
- Step 1: Write the proportion equation
485,215,418.91 : 727,082,517.72 = 288,090,653.63 : x - Step 2: Convert to fraction form
485,215,418.91/727,082,517.72 = 288,090,653.63/x - Step 3: Cross multiply
485,215,418.91x = 727,082,517.72 × 288,090,653.63 - Step 4: Simplify right side
485,215,418.91x = 209,465,677,772,900,864 - Step 5: Solve for x
x = 209,465,677,772,900,864/485,215,418.91 - Step 6: Final answer
x = 431,696,252.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.