Finding the Fourth Proportional to 782,103.88, 1,079,171.94 and 455,485.96
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Solution
The fourth proportional to 782,103.88, 1,079,171.94 and 455,485.96 is: 628,494.09
Step by Step Solution
- Step 1: Write the proportion equation
782,103.88 : 1,079,171.94 = 455,485.96 : x - Step 2: Convert to fraction form
782,103.88/1,079,171.94 = 455,485.96/x - Step 3: Cross multiply
782,103.88x = 1,079,171.94 × 455,485.96 - Step 4: Simplify right side
782,103.88x = 491,547,667,095.96 - Step 5: Solve for x
x = 491,547,667,095.96/782,103.88 - Step 6: Final answer
x = 628,494.09
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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.