Finding the Fourth Proportional to 1,329,423.57, 1,993,717.08 and 430,656.79
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Solution
The fourth proportional to 1,329,423.57, 1,993,717.08 and 430,656.79 is: 645,849.68
Step by Step Solution
- Step 1: Write the proportion equation
1,329,423.57 : 1,993,717.08 = 430,656.79 : x - Step 2: Convert to fraction form
1,329,423.57/1,993,717.08 = 430,656.79/x - Step 3: Cross multiply
1,329,423.57x = 1,993,717.08 × 430,656.79 - Step 4: Simplify right side
1,329,423.57x = 858,607,792,856.68 - Step 5: Solve for x
x = 858,607,792,856.68/1,329,423.57 - Step 6: Final answer
x = 645,849.68
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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.