Finding the Fourth Proportional to 821,569.80, 1,232,354.70 and 379,201.80
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Solution
The fourth proportional to 821,569.80, 1,232,354.70 and 379,201.80 is: 568,802.70
Step by Step Solution
- Step 1: Write the proportion equation
821,569.80 : 1,232,354.70 = 379,201.80 : x - Step 2: Convert to fraction form
821,569.80/1,232,354.70 = 379,201.80/x - Step 3: Cross multiply
821,569.80x = 1,232,354.70 × 379,201.80 - Step 4: Simplify right side
821,569.80x = 467,311,120,478.46 - Step 5: Solve for x
x = 467,311,120,478.46/821,569.80 - Step 6: Final answer
x = 568,802.70
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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.