Finding the Fourth Proportional to 639,431.97, 882,416.21 and 352,952.12
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Solution
The fourth proportional to 639,431.97, 882,416.21 and 352,952.12 is: 487,073.98
Step by Step Solution
- Step 1: Write the proportion equation
639,431.97 : 882,416.21 = 352,952.12 : x - Step 2: Convert to fraction form
639,431.97/882,416.21 = 352,952.12/x - Step 3: Cross multiply
639,431.97x = 882,416.21 × 352,952.12 - Step 4: Simplify right side
639,431.97x = 311,450,672,041.87 - Step 5: Solve for x
x = 311,450,672,041.87/639,431.97 - Step 6: Final answer
x = 487,073.98
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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.