Finding the Fourth Proportional to 878,612.33, 1,318,362.12 and 398,534.19
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Solution
The fourth proportional to 878,612.33, 1,318,362.12 and 398,534.19 is: 598,002.51
Step by Step Solution
- Step 1: Write the proportion equation
878,612.33 : 1,318,362.12 = 398,534.19 : x - Step 2: Convert to fraction form
878,612.33/1,318,362.12 = 398,534.19/x - Step 3: Cross multiply
878,612.33x = 1,318,362.12 × 398,534.19 - Step 4: Simplify right side
878,612.33x = 525,412,379,620.88 - Step 5: Solve for x
x = 525,412,379,620.88/878,612.33 - Step 6: Final answer
x = 598,002.51
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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.