Finding the Fourth Proportional to 644,459.48, 889,236.84 and 372,427.68
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Solution
The fourth proportional to 644,459.48, 889,236.84 and 372,427.68 is: 513,882.45
Step by Step Solution
- Step 1: Write the proportion equation
644,459.48 : 889,236.84 = 372,427.68 : x - Step 2: Convert to fraction form
644,459.48/889,236.84 = 372,427.68/x - Step 3: Cross multiply
644,459.48x = 889,236.84 × 372,427.68 - Step 4: Simplify right side
644,459.48x = 331,176,413,291.73 - Step 5: Solve for x
x = 331,176,413,291.73/644,459.48 - Step 6: Final answer
x = 513,882.45
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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.