Finding the Fourth Proportional to 819,496.48, 1,229,230.08 and 313,920.40
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Solution
The fourth proportional to 819,496.48, 1,229,230.08 and 313,920.40 is: 470,874.99
Step by Step Solution
- Step 1: Write the proportion equation
819,496.48 : 1,229,230.08 = 313,920.40 : x - Step 2: Convert to fraction form
819,496.48/1,229,230.08 = 313,920.40/x - Step 3: Cross multiply
819,496.48x = 1,229,230.08 × 313,920.40 - Step 4: Simplify right side
819,496.48x = 385,880,398,405.63 - Step 5: Solve for x
x = 385,880,398,405.63/819,496.48 - Step 6: Final answer
x = 470,874.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.