Finding the Fourth Proportional to 1,202,939.10, 1,659,844.96 and 686,457.18
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Solution
The fourth proportional to 1,202,939.10, 1,659,844.96 and 686,457.18 is: 947,190.50
Step by Step Solution
- Step 1: Write the proportion equation
1,202,939.10 : 1,659,844.96 = 686,457.18 : x - Step 2: Convert to fraction form
1,202,939.10/1,659,844.96 = 686,457.18/x - Step 3: Cross multiply
1,202,939.10x = 1,659,844.96 × 686,457.18 - Step 4: Simplify right side
1,202,939.10x = 1,139,412,490,478.81 - Step 5: Solve for x
x = 1,139,412,490,478.81/1,202,939.10 - Step 6: Final answer
x = 947,190.50
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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.