Finding the Fourth Proportional to 720,566.19, 994,363.99 and 393,864.53
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Solution
The fourth proportional to 720,566.19, 994,363.99 and 393,864.53 is: 543,523.57
Step by Step Solution
- Step 1: Write the proportion equation
720,566.19 : 994,363.99 = 393,864.53 : x - Step 2: Convert to fraction form
720,566.19/994,363.99 = 393,864.53/x - Step 3: Cross multiply
720,566.19x = 994,363.99 × 393,864.53 - Step 4: Simplify right side
720,566.19x = 391,644,703,600.95 - Step 5: Solve for x
x = 391,644,703,600.95/720,566.19 - Step 6: Final answer
x = 543,523.57
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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.