Finding the Fourth Proportional to 1,688,428.64, 2,330,013.84 and 914,042.12
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Solution
The fourth proportional to 1,688,428.64, 2,330,013.84 and 914,042.12 is: 1,261,368.55
Step by Step Solution
- Step 1: Write the proportion equation
1,688,428.64 : 2,330,013.84 = 914,042.12 : x - Step 2: Convert to fraction form
1,688,428.64/2,330,013.84 = 914,042.12/x - Step 3: Cross multiply
1,688,428.64x = 2,330,013.84 × 914,042.12 - Step 4: Simplify right side
1,688,428.64x = 2,129,730,789,942.94 - Step 5: Solve for x
x = 2,129,730,789,942.94/1,688,428.64 - Step 6: Final answer
x = 1,261,368.55
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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.