Finding the Fourth Proportional to 812,073.43, 1,120,632.75 and 449,497.99
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Solution
The fourth proportional to 812,073.43, 1,120,632.75 and 449,497.99 is: 620,291.40
Step by Step Solution
- Step 1: Write the proportion equation
812,073.43 : 1,120,632.75 = 449,497.99 : x - Step 2: Convert to fraction form
812,073.43/1,120,632.75 = 449,497.99/x - Step 3: Cross multiply
812,073.43x = 1,120,632.75 × 449,497.99 - Step 4: Simplify right side
812,073.43x = 503,722,160,802.52 - Step 5: Solve for x
x = 503,722,160,802.52/812,073.43 - Step 6: Final answer
x = 620,291.40
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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.