Finding the Fourth Proportional to 678,504.19, 936,299.23 and 376,678.75
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Solution
The fourth proportional to 678,504.19, 936,299.23 and 376,678.75 is: 519,796.38
Step by Step Solution
- Step 1: Write the proportion equation
678,504.19 : 936,299.23 = 376,678.75 : x - Step 2: Convert to fraction form
678,504.19/936,299.23 = 376,678.75/x - Step 3: Cross multiply
678,504.19x = 936,299.23 × 376,678.75 - Step 4: Simplify right side
678,504.19x = 352,684,023,582.36 - Step 5: Solve for x
x = 352,684,023,582.36/678,504.19 - Step 6: Final answer
x = 519,796.38
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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.