Finding the Fourth Proportional to 783,523.12, 1,175,616.76 and 428,121.96
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Solution
The fourth proportional to 783,523.12, 1,175,616.76 and 428,121.96 is: 642,364.39
Step by Step Solution
- Step 1: Write the proportion equation
783,523.12 : 1,175,616.76 = 428,121.96 : x - Step 2: Convert to fraction form
783,523.12/1,175,616.76 = 428,121.96/x - Step 3: Cross multiply
783,523.12x = 1,175,616.76 × 428,121.96 - Step 4: Simplify right side
783,523.12x = 503,307,351,500.05 - Step 5: Solve for x
x = 503,307,351,500.05/783,523.12 - Step 6: Final answer
x = 642,364.39
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.