Finding the Fourth Proportional to 622,705.62, 859,006.40 and 393,179.97
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Solution
The fourth proportional to 622,705.62, 859,006.40 and 393,179.97 is: 542,381.66
Step by Step Solution
- Step 1: Write the proportion equation
622,705.62 : 859,006.40 = 393,179.97 : x - Step 2: Convert to fraction form
622,705.62/859,006.40 = 393,179.97/x - Step 3: Cross multiply
622,705.62x = 859,006.40 × 393,179.97 - Step 4: Simplify right side
622,705.62x = 337,744,108,615.91 - Step 5: Solve for x
x = 337,744,108,615.91/622,705.62 - Step 6: Final answer
x = 542,381.66
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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.