Finding the Fourth Proportional to 639,447.06, 882,434.60 and 352,965.09
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Solution
The fourth proportional to 639,447.06, 882,434.60 and 352,965.09 is: 487,090.54
Step by Step Solution
- Step 1: Write the proportion equation
639,447.06 : 882,434.60 = 352,965.09 : x - Step 2: Convert to fraction form
639,447.06/882,434.60 = 352,965.09/x - Step 3: Cross multiply
639,447.06x = 882,434.60 × 352,965.09 - Step 4: Simplify right side
639,447.06x = 311,468,612,861.47 - Step 5: Solve for x
x = 311,468,612,861.47/639,447.06 - Step 6: Final answer
x = 487,090.54
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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.