Finding the Fourth Proportional to 678,862.10, 936,725.70 and 392,326.94
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Solution
The fourth proportional to 678,862.10, 936,725.70 and 392,326.94 is: 541,351.07
Step by Step Solution
- Step 1: Write the proportion equation
678,862.10 : 936,725.70 = 392,326.94 : x - Step 2: Convert to fraction form
678,862.10/936,725.70 = 392,326.94/x - Step 3: Cross multiply
678,862.10x = 936,725.70 × 392,326.94 - Step 4: Simplify right side
678,862.10x = 367,502,727,500.36 - Step 5: Solve for x
x = 367,502,727,500.36/678,862.10 - Step 6: Final answer
x = 541,351.07
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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.