Finding the Fourth Proportional to 1,421,691.68, 1,961,934.60 and 777,114.40
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Solution
The fourth proportional to 1,421,691.68, 1,961,934.60 and 777,114.40 is: 1,072,417.92
Step by Step Solution
- Step 1: Write the proportion equation
1,421,691.68 : 1,961,934.60 = 777,114.40 : x - Step 2: Convert to fraction form
1,421,691.68/1,961,934.60 = 777,114.40/x - Step 3: Cross multiply
1,421,691.68x = 1,961,934.60 × 777,114.40 - Step 4: Simplify right side
1,421,691.68x = 1,524,647,629,518.24 - Step 5: Solve for x
x = 1,524,647,629,518.24/1,421,691.68 - Step 6: Final answer
x = 1,072,417.92
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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.