Finding the Fourth Proportional to 394,379.40, 591,569.10 and 288,625.80
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Solution
The fourth proportional to 394,379.40, 591,569.10 and 288,625.80 is: 432,938.70
Step by Step Solution
- Step 1: Write the proportion equation
394,379.40 : 591,569.10 = 288,625.80 : x - Step 2: Convert to fraction form
394,379.40/591,569.10 = 288,625.80/x - Step 3: Cross multiply
394,379.40x = 591,569.10 × 288,625.80 - Step 4: Simplify right side
394,379.40x = 170,742,104,742.78 - Step 5: Solve for x
x = 170,742,104,742.78/394,379.40 - Step 6: Final answer
x = 432,938.70
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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.