Finding the Fourth Proportional to 678,770.84, 936,649.14 and 392,309.48
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Solution
The fourth proportional to 678,770.84, 936,649.14 and 392,309.48 is: 541,355.51
Step by Step Solution
- Step 1: Write the proportion equation
678,770.84 : 936,649.14 = 392,309.48 : x - Step 2: Convert to fraction form
678,770.84/936,649.14 = 392,309.48/x - Step 3: Cross multiply
678,770.84x = 936,649.14 × 392,309.48 - Step 4: Simplify right side
678,770.84x = 367,456,337,926.31 - Step 5: Solve for x
x = 367,456,337,926.31/678,770.84 - Step 6: Final answer
x = 541,355.51
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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.