Finding the Fourth Proportional to 728,394.57, 1,005,257.97 and 422,564.49
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Solution
The fourth proportional to 728,394.57, 1,005,257.97 and 422,564.49 is: 583,181.61
Step by Step Solution
- Step 1: Write the proportion equation
728,394.57 : 1,005,257.97 = 422,564.49 : x - Step 2: Convert to fraction form
728,394.57/1,005,257.97 = 422,564.49/x - Step 3: Cross multiply
728,394.57x = 1,005,257.97 × 422,564.49 - Step 4: Simplify right side
728,394.57x = 424,786,321,411.49 - Step 5: Solve for x
x = 424,786,321,411.49/728,394.57 - Step 6: Final answer
x = 583,181.61
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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.