Finding the Fourth Proportional to 639,365.40, 882,261.43 and 352,866.99
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Solution
The fourth proportional to 639,365.40, 882,261.43 and 352,866.99 is: 486,921.77
Step by Step Solution
- Step 1: Write the proportion equation
639,365.40 : 882,261.43 = 352,866.99 : x - Step 2: Convert to fraction form
639,365.40/882,261.43 = 352,866.99/x - Step 3: Cross multiply
639,365.40x = 882,261.43 × 352,866.99 - Step 4: Simplify right side
639,365.40x = 311,320,935,197.20 - Step 5: Solve for x
x = 311,320,935,197.20/639,365.40 - Step 6: Final answer
x = 486,921.77
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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.