Finding the Fourth Proportional to 813,177.09, 1,121,816.39 and 490,784.13
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Solution
The fourth proportional to 813,177.09, 1,121,816.39 and 490,784.13 is: 677,060.00
Step by Step Solution
- Step 1: Write the proportion equation
813,177.09 : 1,121,816.39 = 490,784.13 : x - Step 2: Convert to fraction form
813,177.09/1,121,816.39 = 490,784.13/x - Step 3: Cross multiply
813,177.09x = 1,121,816.39 × 490,784.13 - Step 4: Simplify right side
813,177.09x = 550,569,678,531.97 - Step 5: Solve for x
x = 550,569,678,531.97/813,177.09 - Step 6: Final answer
x = 677,060.00
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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.