Finding the Fourth Proportional to 556,859.21, 768,354.56 and 338,921.91
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Solution
The fourth proportional to 556,859.21, 768,354.56 and 338,921.91 is: 467,644.58
Step by Step Solution
- Step 1: Write the proportion equation
556,859.21 : 768,354.56 = 338,921.91 : x - Step 2: Convert to fraction form
556,859.21/768,354.56 = 338,921.91/x - Step 3: Cross multiply
556,859.21x = 768,354.56 × 338,921.91 - Step 4: Simplify right side
556,859.21x = 260,412,189,496.03 - Step 5: Solve for x
x = 260,412,189,496.03/556,859.21 - Step 6: Final answer
x = 467,644.58
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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.