Finding the Fourth Proportional to 678,578.02, 936,552.84 and 392,264.08
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Solution
The fourth proportional to 678,578.02, 936,552.84 and 392,264.08 is: 541,391.01
Step by Step Solution
- Step 1: Write the proportion equation
678,578.02 : 936,552.84 = 392,264.08 : x - Step 2: Convert to fraction form
678,578.02/936,552.84 = 392,264.08/x - Step 3: Cross multiply
678,578.02x = 936,552.84 × 392,264.08 - Step 4: Simplify right side
678,578.02x = 367,376,038,153.99 - Step 5: Solve for x
x = 367,376,038,153.99/678,578.02 - Step 6: Final answer
x = 541,391.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.