Finding the Fourth Proportional to 428,092.80, 591,165.17 and 320,475.99
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Solution
The fourth proportional to 428,092.80, 591,165.17 and 320,475.99 is: 442,554.15
Step by Step Solution
- Step 1: Write the proportion equation
428,092.80 : 591,165.17 = 320,475.99 : x - Step 2: Convert to fraction form
428,092.80/591,165.17 = 320,475.99/x - Step 3: Cross multiply
428,092.80x = 591,165.17 × 320,475.99 - Step 4: Simplify right side
428,092.80x = 189,454,243,109.27 - Step 5: Solve for x
x = 189,454,243,109.27/428,092.80 - Step 6: Final answer
x = 442,554.15
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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.