Finding the Fourth Proportional to 499,356.19, 688,917.90 and 318,035.62
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Solution
The fourth proportional to 499,356.19, 688,917.90 and 318,035.62 is: 438,765.83
Step by Step Solution
- Step 1: Write the proportion equation
499,356.19 : 688,917.90 = 318,035.62 : x - Step 2: Convert to fraction form
499,356.19/688,917.90 = 318,035.62/x - Step 3: Cross multiply
499,356.19x = 688,917.90 × 318,035.62 - Step 4: Simplify right side
499,356.19x = 219,100,431,455.60 - Step 5: Solve for x
x = 219,100,431,455.60/499,356.19 - Step 6: Final answer
x = 438,765.83
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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.