Finding the Fourth Proportional to 623,992.36, 861,634.36 and 394,953.70
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Solution
The fourth proportional to 623,992.36, 861,634.36 and 394,953.70 is: 545,368.34
Step by Step Solution
- Step 1: Write the proportion equation
623,992.36 : 861,634.36 = 394,953.70 : x - Step 2: Convert to fraction form
623,992.36/861,634.36 = 394,953.70/x - Step 3: Cross multiply
623,992.36x = 861,634.36 × 394,953.70 - Step 4: Simplify right side
623,992.36x = 340,305,678,529.13 - Step 5: Solve for x
x = 340,305,678,529.13/623,992.36 - Step 6: Final answer
x = 545,368.34
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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.