Finding the Fourth Proportional to 1,202,971.10, 1,659,889.13 and 686,489.18
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Solution
The fourth proportional to 1,202,971.10, 1,659,889.13 and 686,489.18 is: 947,234.66
Step by Step Solution
- Step 1: Write the proportion equation
1,202,971.10 : 1,659,889.13 = 686,489.18 : x - Step 2: Convert to fraction form
1,202,971.10/1,659,889.13 = 686,489.18/x - Step 3: Cross multiply
1,202,971.10x = 1,659,889.13 × 686,489.18 - Step 4: Simplify right side
1,202,971.10x = 1,139,495,916,012.72 - Step 5: Solve for x
x = 1,139,495,916,012.72/1,202,971.10 - Step 6: Final answer
x = 947,234.66
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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.