Finding the Fourth Proportional to 678,572.76, 936,545.58 and 392,258.82
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Solution
The fourth proportional to 678,572.76, 936,545.58 and 392,258.82 is: 541,383.75
Step by Step Solution
- Step 1: Write the proportion equation
678,572.76 : 936,545.58 = 392,258.82 : x - Step 2: Convert to fraction form
678,572.76/936,545.58 = 392,258.82/x - Step 3: Cross multiply
678,572.76x = 936,545.58 × 392,258.82 - Step 4: Simplify right side
678,572.76x = 367,368,264,087.02 - Step 5: Solve for x
x = 367,368,264,087.02/678,572.76 - Step 6: Final answer
x = 541,383.75
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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.