Finding the Fourth Proportional to 678,774.41, 936,654.05 and 392,313.05
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Solution
The fourth proportional to 678,774.41, 936,654.05 and 392,313.05 is: 541,360.43
Step by Step Solution
- Step 1: Write the proportion equation
678,774.41 : 936,654.05 = 392,313.05 : x - Step 2: Convert to fraction form
678,774.41/936,654.05 = 392,313.05/x - Step 3: Cross multiply
678,774.41x = 936,654.05 × 392,313.05 - Step 4: Simplify right side
678,774.41x = 367,461,603,447.87 - Step 5: Solve for x
x = 367,461,603,447.87/678,774.41 - Step 6: Final answer
x = 541,360.43
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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.