Finding the Fourth Proportional to 643,631.80, 965,447.70 and 614,107.30
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Solution
The fourth proportional to 643,631.80, 965,447.70 and 614,107.30 is: 921,160.95
Step by Step Solution
- Step 1: Write the proportion equation
643,631.80 : 965,447.70 = 614,107.30 : x - Step 2: Convert to fraction form
643,631.80/965,447.70 = 614,107.30/x - Step 3: Cross multiply
643,631.80x = 965,447.70 × 614,107.30 - Step 4: Simplify right side
643,631.80x = 592,888,480,338.21 - Step 5: Solve for x
x = 592,888,480,338.21/643,631.80 - Step 6: Final answer
x = 921,160.95
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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.