Finding the Fourth Proportional to 620,508.84, 856,381.38 and 378,739.68
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Solution
The fourth proportional to 620,508.84, 856,381.38 and 378,739.68 is: 522,709.09
Step by Step Solution
- Step 1: Write the proportion equation
620,508.84 : 856,381.38 = 378,739.68 : x - Step 2: Convert to fraction form
620,508.84/856,381.38 = 378,739.68/x - Step 3: Cross multiply
620,508.84x = 856,381.38 × 378,739.68 - Step 4: Simplify right side
620,508.84x = 324,345,609,819.16 - Step 5: Solve for x
x = 324,345,609,819.16/620,508.84 - Step 6: Final answer
x = 522,709.09
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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.