Finding the Fourth Proportional to 692,292.20, 1,038,578.70 and 392,916.20
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Solution
The fourth proportional to 692,292.20, 1,038,578.70 and 392,916.20 is: 589,453.99
Step by Step Solution
- Step 1: Write the proportion equation
692,292.20 : 1,038,578.70 = 392,916.20 : x - Step 2: Convert to fraction form
692,292.20/1,038,578.70 = 392,916.20/x - Step 3: Cross multiply
692,292.20x = 1,038,578.70 × 392,916.20 - Step 4: Simplify right side
692,292.20x = 408,074,396,204.94 - Step 5: Solve for x
x = 408,074,396,204.94/692,292.20 - Step 6: Final answer
x = 589,453.99
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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.