Finding the Fourth Proportional to 678,005.16, 935,583.18 and 406,068.12
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Solution
The fourth proportional to 678,005.16, 935,583.18 and 406,068.12 is: 560,335.71
Step by Step Solution
- Step 1: Write the proportion equation
678,005.16 : 935,583.18 = 406,068.12 : x - Step 2: Convert to fraction form
678,005.16/935,583.18 = 406,068.12/x - Step 3: Cross multiply
678,005.16x = 935,583.18 × 406,068.12 - Step 4: Simplify right side
678,005.16x = 379,910,503,006.22 - Step 5: Solve for x
x = 379,910,503,006.22/678,005.16 - Step 6: Final answer
x = 560,335.71
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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.