Finding the Fourth Proportional to 699,257.12, 964,965.12 and 393,310.40
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Solution
The fourth proportional to 699,257.12, 964,965.12 and 393,310.40 is: 542,762.89
Step by Step Solution
- Step 1: Write the proportion equation
699,257.12 : 964,965.12 = 393,310.40 : x - Step 2: Convert to fraction form
699,257.12/964,965.12 = 393,310.40/x - Step 3: Cross multiply
699,257.12x = 964,965.12 × 393,310.40 - Step 4: Simplify right side
699,257.12x = 379,530,817,333.25 - Step 5: Solve for x
x = 379,530,817,333.25/699,257.12 - Step 6: Final answer
x = 542,762.89
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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.