Finding the Fourth Proportional to 1,198,691.79, 1,654,245.14 and 689,394.75
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Solution
The fourth proportional to 1,198,691.79, 1,654,245.14 and 689,394.75 is: 951,393.78
Step by Step Solution
- Step 1: Write the proportion equation
1,198,691.79 : 1,654,245.14 = 689,394.75 : x - Step 2: Convert to fraction form
1,198,691.79/1,654,245.14 = 689,394.75/x - Step 3: Cross multiply
1,198,691.79x = 1,654,245.14 × 689,394.75 - Step 4: Simplify right side
1,198,691.79x = 1,140,427,911,282.04 - Step 5: Solve for x
x = 1,140,427,911,282.04/1,198,691.79 - Step 6: Final answer
x = 951,393.78
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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.