Finding the Fourth Proportional to 643,385.71, 964,450.98 and 306,335.80
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Solution
The fourth proportional to 643,385.71, 964,450.98 and 306,335.80 is: 459,204.89
Step by Step Solution
- Step 1: Write the proportion equation
643,385.71 : 964,450.98 = 306,335.80 : x - Step 2: Convert to fraction form
643,385.71/964,450.98 = 306,335.80/x - Step 3: Cross multiply
643,385.71x = 964,450.98 × 306,335.80 - Step 4: Simplify right side
643,385.71x = 295,445,860,107.96 - Step 5: Solve for x
x = 295,445,860,107.96/643,385.71 - Step 6: Final answer
x = 459,204.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.