Finding the Fourth Proportional to 728,401.73, 1,005,532.84 and 518,984.63
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Solution
The fourth proportional to 728,401.73, 1,005,532.84 and 518,984.63 is: 716,439.94
Step by Step Solution
- Step 1: Write the proportion equation
728,401.73 : 1,005,532.84 = 518,984.63 : x - Step 2: Convert to fraction form
728,401.73/1,005,532.84 = 518,984.63/x - Step 3: Cross multiply
728,401.73x = 1,005,532.84 × 518,984.63 - Step 4: Simplify right side
728,401.73x = 521,856,088,920.25 - Step 5: Solve for x
x = 521,856,088,920.25/728,401.73 - Step 6: Final answer
x = 716,439.94
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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.