Finding the Fourth Proportional to 743,972.88, 1,115,791.65 and 211,482.12
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Solution
The fourth proportional to 743,972.88, 1,115,791.65 and 211,482.12 is: 317,175.52
Step by Step Solution
- Step 1: Write the proportion equation
743,972.88 : 1,115,791.65 = 211,482.12 : x - Step 2: Convert to fraction form
743,972.88/1,115,791.65 = 211,482.12/x - Step 3: Cross multiply
743,972.88x = 1,115,791.65 × 211,482.12 - Step 4: Simplify right side
743,972.88x = 235,969,983,620.30 - Step 5: Solve for x
x = 235,969,983,620.30/743,972.88 - Step 6: Final answer
x = 317,175.52
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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.