Finding the Fourth Proportional to 678,105.75, 935,815.10 and 376,299.75
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Solution
The fourth proportional to 678,105.75, 935,815.10 and 376,299.75 is: 519,309.84
Step by Step Solution
- Step 1: Write the proportion equation
678,105.75 : 935,815.10 = 376,299.75 : x - Step 2: Convert to fraction form
678,105.75/935,815.10 = 376,299.75/x - Step 3: Cross multiply
678,105.75x = 935,815.10 × 376,299.75 - Step 4: Simplify right side
678,105.75x = 352,146,988,176.23 - Step 5: Solve for x
x = 352,146,988,176.23/678,105.75 - Step 6: Final answer
x = 519,309.84
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1.5x scale
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.