Finding the Fourth Proportional to 612,991.19, 845,914.60 and 354,879.08
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Solution
The fourth proportional to 612,991.19, 845,914.60 and 354,879.08 is: 489,725.46
Step by Step Solution
- Step 1: Write the proportion equation
612,991.19 : 845,914.60 = 354,879.08 : x - Step 2: Convert to fraction form
612,991.19/845,914.60 = 354,879.08/x - Step 3: Cross multiply
612,991.19x = 845,914.60 × 354,879.08 - Step 4: Simplify right side
612,991.19x = 300,197,395,006.57 - Step 5: Solve for x
x = 300,197,395,006.57/612,991.19 - Step 6: Final answer
x = 489,725.46
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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.