Finding the Fourth Proportional to 678,903.12, 936,915.96 and 377,097.12
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Solution
The fourth proportional to 678,903.12, 936,915.96 and 377,097.12 is: 520,410.50
Step by Step Solution
- Step 1: Write the proportion equation
678,903.12 : 936,915.96 = 377,097.12 : x - Step 2: Convert to fraction form
678,903.12/936,915.96 = 377,097.12/x - Step 3: Cross multiply
678,903.12x = 936,915.96 × 377,097.12 - Step 4: Simplify right side
678,903.12x = 353,308,310,198.04 - Step 5: Solve for x
x = 353,308,310,198.04/678,903.12 - Step 6: Final answer
x = 520,410.50
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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.