Finding the Fourth Proportional to 389,542.58, 533,670.82 and 374,975.79
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Solution
The fourth proportional to 389,542.58, 533,670.82 and 374,975.79 is: 513,714.40
Step by Step Solution
- Step 1: Write the proportion equation
389,542.58 : 533,670.82 = 374,975.79 : x - Step 2: Convert to fraction form
389,542.58/533,670.82 = 374,975.79/x - Step 3: Cross multiply
389,542.58x = 533,670.82 × 374,975.79 - Step 4: Simplify right side
389,542.58x = 200,113,632,786.22 - Step 5: Solve for x
x = 200,113,632,786.22/389,542.58 - Step 6: Final answer
x = 513,714.40
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.