Finding the Fourth Proportional to 1,290,516.12, 1,781,135.17 and 746,951.63
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Solution
The fourth proportional to 1,290,516.12, 1,781,135.17 and 746,951.63 is: 1,030,922.27
Step by Step Solution
- Step 1: Write the proportion equation
1,290,516.12 : 1,781,135.17 = 746,951.63 : x - Step 2: Convert to fraction form
1,290,516.12/1,781,135.17 = 746,951.63/x - Step 3: Cross multiply
1,290,516.12x = 1,781,135.17 × 746,951.63 - Step 4: Simplify right side
1,290,516.12x = 1,330,421,811,910.38 - Step 5: Solve for x
x = 1,330,421,811,910.38/1,290,516.12 - Step 6: Final answer
x = 1,030,922.27
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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.