Finding the Fourth Proportional to 485,976.45, 728,373.68 and 343,862.68
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Solution
The fourth proportional to 485,976.45, 728,373.68 and 343,862.68 is: 515,375.84
Step by Step Solution
- Step 1: Write the proportion equation
485,976.45 : 728,373.68 = 343,862.68 : x - Step 2: Convert to fraction form
485,976.45/728,373.68 = 343,862.68/x - Step 3: Cross multiply
485,976.45x = 728,373.68 × 343,862.68 - Step 4: Simplify right side
485,976.45x = 250,460,522,106.02 - Step 5: Solve for x
x = 250,460,522,106.02/485,976.45 - Step 6: Final answer
x = 515,375.84
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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.