Finding the Fourth Proportional to 403,358.67, 555,434.42 and 394,407.90
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Solution
The fourth proportional to 403,358.67, 555,434.42 and 394,407.90 is: 543,108.99
Step by Step Solution
- Step 1: Write the proportion equation
403,358.67 : 555,434.42 = 394,407.90 : x - Step 2: Convert to fraction form
403,358.67/555,434.42 = 394,407.90/x - Step 3: Cross multiply
403,358.67x = 555,434.42 × 394,407.90 - Step 4: Simplify right side
403,358.67x = 219,067,721,207.88 - Step 5: Solve for x
x = 219,067,721,207.88/403,358.67 - Step 6: Final answer
x = 543,108.99
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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.