Finding the Fourth Proportional to 738,348.25, 1,018,920.99 and 398,816.50
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Solution
The fourth proportional to 738,348.25, 1,018,920.99 and 398,816.50 is: 550,366.99
Step by Step Solution
- Step 1: Write the proportion equation
738,348.25 : 1,018,920.99 = 398,816.50 : x - Step 2: Convert to fraction form
738,348.25/1,018,920.99 = 398,816.50/x - Step 3: Cross multiply
738,348.25x = 1,018,920.99 × 398,816.50 - Step 4: Simplify right side
738,348.25x = 406,362,503,008.34 - Step 5: Solve for x
x = 406,362,503,008.34/738,348.25 - Step 6: Final answer
x = 550,366.99
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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.