Finding the Fourth Proportional to 639,542.20, 882,545.10 and 353,056.14
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Solution
The fourth proportional to 639,542.20, 882,545.10 and 353,056.14 is: 487,204.69
Step by Step Solution
- Step 1: Write the proportion equation
639,542.20 : 882,545.10 = 353,056.14 : x - Step 2: Convert to fraction form
639,542.20/882,545.10 = 353,056.14/x - Step 3: Cross multiply
639,542.20x = 882,545.10 × 353,056.14 - Step 4: Simplify right side
639,542.20x = 311,587,961,969.19 - Step 5: Solve for x
x = 311,587,961,969.19/639,542.20 - Step 6: Final answer
x = 487,204.69
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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.