Finding the Fourth Proportional to 783,728.70, 1,175,925.91 and 428,327.53
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Solution
The fourth proportional to 783,728.70, 1,175,925.91 and 428,327.53 is: 642,673.21
Step by Step Solution
- Step 1: Write the proportion equation
783,728.70 : 1,175,925.91 = 428,327.53 : x - Step 2: Convert to fraction form
783,728.70/1,175,925.91 = 428,327.53/x - Step 3: Cross multiply
783,728.70x = 1,175,925.91 × 428,327.53 - Step 4: Simplify right side
783,728.70x = 503,681,440,493.30 - Step 5: Solve for x
x = 503,681,440,493.30/783,728.70 - Step 6: Final answer
x = 642,673.21
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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.