Finding the Fourth Proportional to 1,215,958.68, 1,677,993.69 and 664,649.60
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Solution
The fourth proportional to 1,215,958.68, 1,677,993.69 and 664,649.60 is: 917,200.43
Step by Step Solution
- Step 1: Write the proportion equation
1,215,958.68 : 1,677,993.69 = 664,649.60 : x - Step 2: Convert to fraction form
1,215,958.68/1,677,993.69 = 664,649.60/x - Step 3: Cross multiply
1,215,958.68x = 1,677,993.69 × 664,649.60 - Step 4: Simplify right side
1,215,958.68x = 1,115,277,826,471.06 - Step 5: Solve for x
x = 1,115,277,826,471.06/1,215,958.68 - Step 6: Final answer
x = 917,200.43
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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.