Finding the Fourth Proportional to 811,649.07, 1,120,108.73 and 449,067.06
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Solution
The fourth proportional to 811,649.07, 1,120,108.73 and 449,067.06 is: 619,730.81
Step by Step Solution
- Step 1: Write the proportion equation
811,649.07 : 1,120,108.73 = 449,067.06 : x - Step 2: Convert to fraction form
811,649.07/1,120,108.73 = 449,067.06/x - Step 3: Cross multiply
811,649.07x = 1,120,108.73 × 449,067.06 - Step 4: Simplify right side
811,649.07x = 503,003,932,016.10 - Step 5: Solve for x
x = 503,003,932,016.10/811,649.07 - Step 6: Final answer
x = 619,730.81
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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.