Finding the Fourth Proportional to 639,438.12, 882,419.67 and 352,958.13
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Solution
The fourth proportional to 639,438.12, 882,419.67 and 352,958.13 is: 487,079.50
Step by Step Solution
- Step 1: Write the proportion equation
639,438.12 : 882,419.67 = 352,958.13 : x - Step 2: Convert to fraction form
639,438.12/882,419.67 = 352,958.13/x - Step 3: Cross multiply
639,438.12x = 882,419.67 × 352,958.13 - Step 4: Simplify right side
639,438.12x = 311,457,196,598.42 - Step 5: Solve for x
x = 311,457,196,598.42/639,438.12 - Step 6: Final answer
x = 487,079.50
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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.