Finding the Fourth Proportional to 775,974.13, 1,163,621.85 and 391,486.42
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Solution
The fourth proportional to 775,974.13, 1,163,621.85 and 391,486.42 is: 587,058.42
Step by Step Solution
- Step 1: Write the proportion equation
775,974.13 : 1,163,621.85 = 391,486.42 : x - Step 2: Convert to fraction form
775,974.13/1,163,621.85 = 391,486.42/x - Step 3: Cross multiply
775,974.13x = 1,163,621.85 × 391,486.42 - Step 4: Simplify right side
775,974.13x = 455,542,147,933.47 - Step 5: Solve for x
x = 455,542,147,933.47/775,974.13 - Step 6: Final answer
x = 587,058.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.