Finding the Fourth Proportional to 428,476.13, 641,452.26 and 316,654.82
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Solution
The fourth proportional to 428,476.13, 641,452.26 and 316,654.82 is: 474,049.63
Step by Step Solution
- Step 1: Write the proportion equation
428,476.13 : 641,452.26 = 316,654.82 : x - Step 2: Convert to fraction form
428,476.13/641,452.26 = 316,654.82/x - Step 3: Cross multiply
428,476.13x = 641,452.26 × 316,654.82 - Step 4: Simplify right side
428,476.13x = 203,118,950,314.53 - Step 5: Solve for x
x = 203,118,950,314.53/428,476.13 - Step 6: Final answer
x = 474,049.63
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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.