Finding the Fourth Proportional to 639,517.18, 882,510.57 and 353,031.12
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Solution
The fourth proportional to 639,517.18, 882,510.57 and 353,031.12 is: 487,170.17
Step by Step Solution
- Step 1: Write the proportion equation
639,517.18 : 882,510.57 = 353,031.12 : x - Step 2: Convert to fraction form
639,517.18/882,510.57 = 353,031.12/x - Step 3: Cross multiply
639,517.18x = 882,510.57 × 353,031.12 - Step 4: Simplify right side
639,517.18x = 311,553,694,938.94 - Step 5: Solve for x
x = 311,553,694,938.94/639,517.18 - Step 6: Final answer
x = 487,170.17
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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.