Finding the Fourth Proportional to 720,935.80, 1,081,403.70 and 347,687.80
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Solution
The fourth proportional to 720,935.80, 1,081,403.70 and 347,687.80 is: 521,531.70
Step by Step Solution
- Step 1: Write the proportion equation
720,935.80 : 1,081,403.70 = 347,687.80 : x - Step 2: Convert to fraction form
720,935.80/1,081,403.70 = 347,687.80/x - Step 3: Cross multiply
720,935.80x = 1,081,403.70 × 347,687.80 - Step 4: Simplify right side
720,935.80x = 375,990,873,364.86 - Step 5: Solve for x
x = 375,990,873,364.86/720,935.80 - Step 6: Final answer
x = 521,531.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.