Finding the Fourth Proportional to 1,328,578.91, 1,993,184.71 and 430,020.80
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Solution
The fourth proportional to 1,328,578.91, 1,993,184.71 and 430,020.80 is: 645,133.59
Step by Step Solution
- Step 1: Write the proportion equation
1,328,578.91 : 1,993,184.71 = 430,020.80 : x - Step 2: Convert to fraction form
1,328,578.91/1,993,184.71 = 430,020.80/x - Step 3: Cross multiply
1,328,578.91x = 1,993,184.71 × 430,020.80 - Step 4: Simplify right side
1,328,578.91x = 857,110,883,541.97 - Step 5: Solve for x
x = 857,110,883,541.97/1,328,578.91 - Step 6: Final answer
x = 645,133.59
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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.