Finding the Fourth Proportional to 812,230.64, 1,120,842.97 and 449,632.87
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Solution
The fourth proportional to 812,230.64, 1,120,842.97 and 449,632.87 is: 620,473.82
Step by Step Solution
- Step 1: Write the proportion equation
812,230.64 : 1,120,842.97 = 449,632.87 : x - Step 2: Convert to fraction form
812,230.64/1,120,842.97 = 449,632.87/x - Step 3: Cross multiply
812,230.64x = 1,120,842.97 × 449,632.87 - Step 4: Simplify right side
812,230.64x = 503,967,843,798.98 - Step 5: Solve for x
x = 503,967,843,798.98/812,230.64 - Step 6: Final answer
x = 620,473.82
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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.