Finding the Fourth Proportional to 639,680.64, 882,753.12 and 353,194.62
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Solution
The fourth proportional to 639,680.64, 882,753.12 and 353,194.62 is: 487,405.17
Step by Step Solution
- Step 1: Write the proportion equation
639,680.64 : 882,753.12 = 353,194.62 : x - Step 2: Convert to fraction form
639,680.64/882,753.12 = 353,194.62/x - Step 3: Cross multiply
639,680.64x = 882,753.12 × 353,194.62 - Step 4: Simplify right side
639,680.64x = 311,783,652,772.21 - Step 5: Solve for x
x = 311,783,652,772.21/639,680.64 - Step 6: Final answer
x = 487,405.17
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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.