Finding the Fourth Proportional to 822,517.20, 1,135,076.76 and 478,435.68
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Solution
The fourth proportional to 822,517.20, 1,135,076.76 and 478,435.68 is: 660,243.00
Step by Step Solution
- Step 1: Write the proportion equation
822,517.20 : 1,135,076.76 = 478,435.68 : x - Step 2: Convert to fraction form
822,517.20/1,135,076.76 = 478,435.68/x - Step 3: Cross multiply
822,517.20x = 1,135,076.76 × 478,435.68 - Step 4: Simplify right side
822,517.20x = 543,061,221,522.80 - Step 5: Solve for x
x = 543,061,221,522.80/822,517.20 - Step 6: Final answer
x = 660,243.00
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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.