Finding the Fourth Proportional to 1,320,795.80, 1,981,193.70 and 323,523.80
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Solution
The fourth proportional to 1,320,795.80, 1,981,193.70 and 323,523.80 is: 485,285.70
Step by Step Solution
- Step 1: Write the proportion equation
1,320,795.80 : 1,981,193.70 = 323,523.80 : x - Step 2: Convert to fraction form
1,320,795.80/1,981,193.70 = 323,523.80/x - Step 3: Cross multiply
1,320,795.80x = 1,981,193.70 × 323,523.80 - Step 4: Simplify right side
1,320,795.80x = 640,963,314,360.06 - Step 5: Solve for x
x = 640,963,314,360.06/1,320,795.80 - Step 6: Final answer
x = 485,285.70
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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.