Finding the Fourth Proportional to 685,793.21, 946,304.93 and 395,415.70
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Solution
The fourth proportional to 685,793.21, 946,304.93 and 395,415.70 is: 545,621.95
Step by Step Solution
- Step 1: Write the proportion equation
685,793.21 : 946,304.93 = 395,415.70 : x - Step 2: Convert to fraction form
685,793.21/946,304.93 = 395,415.70/x - Step 3: Cross multiply
685,793.21x = 946,304.93 × 395,415.70 - Step 4: Simplify right side
685,793.21x = 374,183,824,932.18 - Step 5: Solve for x
x = 374,183,824,932.18/685,793.21 - Step 6: Final answer
x = 545,621.95
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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.