Finding the Fourth Proportional to 720,506.45, 994,306.27 and 393,828.79
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Solution
The fourth proportional to 720,506.45, 994,306.27 and 393,828.79 is: 543,487.75
Step by Step Solution
- Step 1: Write the proportion equation
720,506.45 : 994,306.27 = 393,828.79 : x - Step 2: Convert to fraction form
720,506.45/994,306.27 = 393,828.79/x - Step 3: Cross multiply
720,506.45x = 994,306.27 × 393,828.79 - Step 4: Simplify right side
720,506.45x = 391,586,430,231.98 - Step 5: Solve for x
x = 391,586,430,231.98/720,506.45 - Step 6: Final answer
x = 543,487.75
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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.