Finding the Fourth Proportional to 720,838.71, 994,717.26 and 398,529.99
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Solution
The fourth proportional to 720,838.71, 994,717.26 and 398,529.99 is: 549,949.18
Step by Step Solution
- Step 1: Write the proportion equation
720,838.71 : 994,717.26 = 398,529.99 : x - Step 2: Convert to fraction form
720,838.71/994,717.26 = 398,529.99/x - Step 3: Cross multiply
720,838.71x = 994,717.26 × 398,529.99 - Step 4: Simplify right side
720,838.71x = 396,424,659,680.63 - Step 5: Solve for x
x = 396,424,659,680.63/720,838.71 - Step 6: Final answer
x = 549,949.18
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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.