Finding the Fourth Proportional to 499,608.48, 689,417.84 and 281,805.12
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Solution
The fourth proportional to 499,608.48, 689,417.84 and 281,805.12 is: 388,867.45
Step by Step Solution
- Step 1: Write the proportion equation
499,608.48 : 689,417.84 = 281,805.12 : x - Step 2: Convert to fraction form
499,608.48/689,417.84 = 281,805.12/x - Step 3: Cross multiply
499,608.48x = 689,417.84 × 281,805.12 - Step 4: Simplify right side
499,608.48x = 194,281,477,131.34 - Step 5: Solve for x
x = 194,281,477,131.34/499,608.48 - Step 6: Final answer
x = 388,867.45
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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.