Finding the Fourth Proportional to 720,368.58, 994,081.89 and 398,071.98
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Solution
The fourth proportional to 720,368.58, 994,081.89 and 398,071.98 is: 549,324.55
Step by Step Solution
- Step 1: Write the proportion equation
720,368.58 : 994,081.89 = 398,071.98 : x - Step 2: Convert to fraction form
720,368.58/994,081.89 = 398,071.98/x - Step 3: Cross multiply
720,368.58x = 994,081.89 × 398,071.98 - Step 4: Simplify right side
720,368.58x = 395,716,146,234.44 - Step 5: Solve for x
x = 395,716,146,234.44/720,368.58 - Step 6: Final answer
x = 549,324.55
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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.