Finding the Fourth Proportional to 686,565.21, 1,029,707.08 and 259,953.86
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Solution
The fourth proportional to 686,565.21, 1,029,707.08 and 259,953.86 is: 389,877.50
Step by Step Solution
- Step 1: Write the proportion equation
686,565.21 : 1,029,707.08 = 259,953.86 : x - Step 2: Convert to fraction form
686,565.21/1,029,707.08 = 259,953.86/x - Step 3: Cross multiply
686,565.21x = 1,029,707.08 × 259,953.86 - Step 4: Simplify right side
686,565.21x = 267,676,327,709.85 - Step 5: Solve for x
x = 267,676,327,709.85/686,565.21 - Step 6: Final answer
x = 389,877.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.