Finding the Fourth Proportional to 436,395.78, 654,519.42 and 120,778.74
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Solution
The fourth proportional to 436,395.78, 654,519.42 and 120,778.74 is: 181,147.56
Step by Step Solution
- Step 1: Write the proportion equation
436,395.78 : 654,519.42 = 120,778.74 : x - Step 2: Convert to fraction form
436,395.78/654,519.42 = 120,778.74/x - Step 3: Cross multiply
436,395.78x = 654,519.42 × 120,778.74 - Step 4: Simplify right side
436,395.78x = 79,052,030,853.13 - Step 5: Solve for x
x = 79,052,030,853.13/436,395.78 - Step 6: Final answer
x = 181,147.56
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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.