Finding the Fourth Proportional to 715,179.74, 986,958.16 and 392,919.62
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Solution
The fourth proportional to 715,179.74, 986,958.16 and 392,919.62 is: 542,234.63
Step by Step Solution
- Step 1: Write the proportion equation
715,179.74 : 986,958.16 = 392,919.62 : x - Step 2: Convert to fraction form
715,179.74/986,958.16 = 392,919.62/x - Step 3: Cross multiply
715,179.74x = 986,958.16 × 392,919.62 - Step 4: Simplify right side
715,179.74x = 387,795,225,183.10 - Step 5: Solve for x
x = 387,795,225,183.10/715,179.74 - Step 6: Final answer
x = 542,234.63
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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.