Finding the Fourth Proportional to 639,421.81, 882,402.15 and 352,941.97
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Solution
The fourth proportional to 639,421.81, 882,402.15 and 352,941.97 is: 487,059.95
Step by Step Solution
- Step 1: Write the proportion equation
639,421.81 : 882,402.15 = 352,941.97 : x - Step 2: Convert to fraction form
639,421.81/882,402.15 = 352,941.97/x - Step 3: Cross multiply
639,421.81x = 882,402.15 × 352,941.97 - Step 4: Simplify right side
639,421.81x = 311,436,753,153.24 - Step 5: Solve for x
x = 311,436,753,153.24/639,421.81 - Step 6: Final answer
x = 487,059.95
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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.