Finding the Fourth Proportional to 769,390.20, 1,153,163.70 and 395,220.60
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Solution
The fourth proportional to 769,390.20, 1,153,163.70 and 395,220.60 is: 592,357.49
Step by Step Solution
- Step 1: Write the proportion equation
769,390.20 : 1,153,163.70 = 395,220.60 : x - Step 2: Convert to fraction form
769,390.20/1,153,163.70 = 395,220.60/x - Step 3: Cross multiply
769,390.20x = 1,153,163.70 × 395,220.60 - Step 4: Simplify right side
769,390.20x = 455,754,049,412.22 - Step 5: Solve for x
x = 455,754,049,412.22/769,390.20 - Step 6: Final answer
x = 592,357.49
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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.