Finding the Fourth Proportional to 860,357.73, 1,187,286.30 and 478,381.17
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Solution
The fourth proportional to 860,357.73, 1,187,286.30 and 478,381.17 is: 660,161.92
Step by Step Solution
- Step 1: Write the proportion equation
860,357.73 : 1,187,286.30 = 478,381.17 : x - Step 2: Convert to fraction form
860,357.73/1,187,286.30 = 478,381.17/x - Step 3: Cross multiply
860,357.73x = 1,187,286.30 × 478,381.17 - Step 4: Simplify right side
860,357.73x = 567,975,409,318.97 - Step 5: Solve for x
x = 567,975,409,318.97/860,357.73 - Step 6: Final answer
x = 660,161.92
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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.