Finding the Fourth Proportional to 499,791.12, 688,994.28 and 356,302.08
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Solution
The fourth proportional to 499,791.12, 688,994.28 and 356,302.08 is: 491,185.39
Step by Step Solution
- Step 1: Write the proportion equation
499,791.12 : 688,994.28 = 356,302.08 : x - Step 2: Convert to fraction form
499,791.12/688,994.28 = 356,302.08/x - Step 3: Cross multiply
499,791.12x = 688,994.28 × 356,302.08 - Step 4: Simplify right side
499,791.12x = 245,490,095,072.10 - Step 5: Solve for x
x = 245,490,095,072.10/499,791.12 - Step 6: Final answer
x = 491,185.39
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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.