Finding the Fourth Proportional to 415,009.20, 622,513.80 and 379,579.80
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Solution
The fourth proportional to 415,009.20, 622,513.80 and 379,579.80 is: 569,369.70
Step by Step Solution
- Step 1: Write the proportion equation
415,009.20 : 622,513.80 = 379,579.80 : x - Step 2: Convert to fraction form
415,009.20/622,513.80 = 379,579.80/x - Step 3: Cross multiply
415,009.20x = 622,513.80 × 379,579.80 - Step 4: Simplify right side
415,009.20x = 236,293,663,701.24 - Step 5: Solve for x
x = 236,293,663,701.24/415,009.20 - Step 6: Final answer
x = 569,369.70
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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.