Finding the Fourth Proportional to 476,492,447.62, 657,457,578.66 and 278,163,937.90
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Solution
The fourth proportional to 476,492,447.62, 657,457,578.66 and 278,163,937.90 is: 383,806,689.90
Step by Step Solution
- Step 1: Write the proportion equation
476,492,447.62 : 657,457,578.66 = 278,163,937.90 : x - Step 2: Convert to fraction form
476,492,447.62/657,457,578.66 = 278,163,937.90/x - Step 3: Cross multiply
476,492,447.62x = 657,457,578.66 × 278,163,937.90 - Step 4: Simplify right side
476,492,447.62x = 182,880,989,082,264,576 - Step 5: Solve for x
x = 182,880,989,082,264,576/476,492,447.62 - Step 6: Final answer
x = 383,806,689.90
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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.