Finding the Fourth Proportional to 643,114.17, 887,492.57 and 356,634.99
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Solution
The fourth proportional to 643,114.17, 887,492.57 and 356,634.99 is: 492,153.52
Step by Step Solution
- Step 1: Write the proportion equation
643,114.17 : 887,492.57 = 356,634.99 : x - Step 2: Convert to fraction form
643,114.17/887,492.57 = 356,634.99/x - Step 3: Cross multiply
643,114.17x = 887,492.57 × 356,634.99 - Step 4: Simplify right side
643,114.17x = 316,510,902,043.85 - Step 5: Solve for x
x = 316,510,902,043.85/643,114.17 - Step 6: Final answer
x = 492,153.52
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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.