Finding the Fourth Proportional to 821,311.89, 1,133,403.74 and 453,787.88
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Solution
The fourth proportional to 821,311.89, 1,133,403.74 and 453,787.88 is: 626,223.58
Step by Step Solution
- Step 1: Write the proportion equation
821,311.89 : 1,133,403.74 = 453,787.88 : x - Step 2: Convert to fraction form
821,311.89/1,133,403.74 = 453,787.88/x - Step 3: Cross multiply
821,311.89x = 1,133,403.74 × 453,787.88 - Step 4: Simplify right side
821,311.89x = 514,324,872,422.71 - Step 5: Solve for x
x = 514,324,872,422.71/821,311.89 - Step 6: Final answer
x = 626,223.58
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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.