Finding the Fourth Proportional to 678,612.01, 936,599.79 and 392,298.07
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Solution
The fourth proportional to 678,612.01, 936,599.79 and 392,298.07 is: 541,437.94
Step by Step Solution
- Step 1: Write the proportion equation
678,612.01 : 936,599.79 = 392,298.07 : x - Step 2: Convert to fraction form
678,612.01/936,599.79 = 392,298.07/x - Step 3: Cross multiply
678,612.01x = 936,599.79 × 392,298.07 - Step 4: Simplify right side
678,612.01x = 367,426,289,979.41 - Step 5: Solve for x
x = 367,426,289,979.41/678,612.01 - Step 6: Final answer
x = 541,437.94
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1.5x scale
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.