Finding the Fourth Proportional to 410,076.90, 615,115.35 and 343,721.70
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Solution
The fourth proportional to 410,076.90, 615,115.35 and 343,721.70 is: 515,582.55
Step by Step Solution
- Step 1: Write the proportion equation
410,076.90 : 615,115.35 = 343,721.70 : x - Step 2: Convert to fraction form
410,076.90/615,115.35 = 343,721.70/x - Step 3: Cross multiply
410,076.90x = 615,115.35 × 343,721.70 - Step 4: Simplify right side
410,076.90x = 211,428,493,798.10 - Step 5: Solve for x
x = 211,428,493,798.10/410,076.90 - Step 6: Final answer
x = 515,582.55
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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.