Finding the Fourth Proportional to 761,685.36, 1,051,126.68 and 422,153.88
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Solution
The fourth proportional to 761,685.36, 1,051,126.68 and 422,153.88 is: 582,572.84
Step by Step Solution
- Step 1: Write the proportion equation
761,685.36 : 1,051,126.68 = 422,153.88 : x - Step 2: Convert to fraction form
761,685.36/1,051,126.68 = 422,153.88/x - Step 3: Cross multiply
761,685.36x = 1,051,126.68 × 422,153.88 - Step 4: Simplify right side
761,685.36x = 443,737,206,333.52 - Step 5: Solve for x
x = 443,737,206,333.52/761,685.36 - Step 6: Final answer
x = 582,572.84
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1.5x scale
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.