Finding the Fourth Proportional to 678,847.49, 936,705.50 and 392,312.28
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Solution
The fourth proportional to 678,847.49, 936,705.50 and 392,312.28 is: 541,330.82
Step by Step Solution
- Step 1: Write the proportion equation
678,847.49 : 936,705.50 = 392,312.28 : x - Step 2: Convert to fraction form
678,847.49/936,705.50 = 392,312.28/x - Step 3: Cross multiply
678,847.49x = 936,705.50 × 392,312.28 - Step 4: Simplify right side
678,847.49x = 367,481,068,431.98 - Step 5: Solve for x
x = 367,481,068,431.98/678,847.49 - Step 6: Final answer
x = 541,330.82
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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.