Finding the Fourth Proportional to 485,215,419.09, 727,082,518.08 and 288,090,653.88
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Solution
The fourth proportional to 485,215,419.09, 727,082,518.08 and 288,090,653.88 is: 431,696,252.46
Step by Step Solution
- Step 1: Write the proportion equation
485,215,419.09 : 727,082,518.08 = 288,090,653.88 : x - Step 2: Convert to fraction form
485,215,419.09/727,082,518.08 = 288,090,653.88/x - Step 3: Cross multiply
485,215,419.09x = 727,082,518.08 × 288,090,653.88 - Step 4: Simplify right side
485,215,419.09x = 209,465,678,058,384,128 - Step 5: Solve for x
x = 209,465,678,058,384,128/485,215,419.09 - Step 6: Final answer
x = 431,696,252.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.