Finding the Fourth Proportional to 1,328,578.16, 1,993,183.56 and 430,020.05
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Solution
The fourth proportional to 1,328,578.16, 1,993,183.56 and 430,020.05 is: 645,132.45
Step by Step Solution
- Step 1: Write the proportion equation
1,328,578.16 : 1,993,183.56 = 430,020.05 : x - Step 2: Convert to fraction form
1,328,578.16/1,993,183.56 = 430,020.05/x - Step 3: Cross multiply
1,328,578.16x = 1,993,183.56 × 430,020.05 - Step 4: Simplify right side
1,328,578.16x = 857,108,884,164.46 - Step 5: Solve for x
x = 857,108,884,164.46/1,328,578.16 - Step 6: Final answer
x = 645,132.45
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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.