Finding the Fourth Proportional to 1,230,218.24, 1,697,662.68 and 721,259.60
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Solution
The fourth proportional to 1,230,218.24, 1,697,662.68 and 721,259.60 is: 995,315.68
Step by Step Solution
- Step 1: Write the proportion equation
1,230,218.24 : 1,697,662.68 = 721,259.60 : x - Step 2: Convert to fraction form
1,230,218.24/1,697,662.68 = 721,259.60/x - Step 3: Cross multiply
1,230,218.24x = 1,697,662.68 × 721,259.60 - Step 4: Simplify right side
1,230,218.24x = 1,224,455,505,511.73 - Step 5: Solve for x
x = 1,224,455,505,511.73/1,230,218.24 - Step 6: Final answer
x = 995,315.68
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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.