Finding the Fourth Proportional to 1,385,635.43, 2,078,428.49 and 438,981.54
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Solution
The fourth proportional to 1,385,635.43, 2,078,428.49 and 438,981.54 is: 658,464.50
Step by Step Solution
- Step 1: Write the proportion equation
1,385,635.43 : 2,078,428.49 = 438,981.54 : x - Step 2: Convert to fraction form
1,385,635.43/2,078,428.49 = 438,981.54/x - Step 3: Cross multiply
1,385,635.43x = 2,078,428.49 × 438,981.54 - Step 4: Simplify right side
1,385,635.43x = 912,391,739,320.08 - Step 5: Solve for x
x = 912,391,739,320.08/1,385,635.43 - Step 6: Final answer
x = 658,464.50
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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.