Finding the Fourth Proportional to 543,781.80, 815,672.70 and 403,813.80
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Solution
The fourth proportional to 543,781.80, 815,672.70 and 403,813.80 is: 605,720.70
Step by Step Solution
- Step 1: Write the proportion equation
543,781.80 : 815,672.70 = 403,813.80 : x - Step 2: Convert to fraction form
543,781.80/815,672.70 = 403,813.80/x - Step 3: Cross multiply
543,781.80x = 815,672.70 × 403,813.80 - Step 4: Simplify right side
543,781.80x = 329,379,892,543.26 - Step 5: Solve for x
x = 329,379,892,543.26/543,781.80 - Step 6: Final answer
x = 605,720.70
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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.