Finding the Fourth Proportional to 520,408.56, 718,164.99 and 290,974.05
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Solution
The fourth proportional to 520,408.56, 718,164.99 and 290,974.05 is: 401,544.85
Step by Step Solution
- Step 1: Write the proportion equation
520,408.56 : 718,164.99 = 290,974.05 : x - Step 2: Convert to fraction form
520,408.56/718,164.99 = 290,974.05/x - Step 3: Cross multiply
520,408.56x = 718,164.99 × 290,974.05 - Step 4: Simplify right side
520,408.56x = 208,967,375,708.51 - Step 5: Solve for x
x = 208,967,375,708.51/520,408.56 - Step 6: Final answer
x = 401,544.85
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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.