Finding the Fourth Proportional to 643,311.08, 965,281.02 and 454,981.70
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Solution
The fourth proportional to 643,311.08, 965,281.02 and 454,981.70 is: 682,694.90
Step by Step Solution
- Step 1: Write the proportion equation
643,311.08 : 965,281.02 = 454,981.70 : x - Step 2: Convert to fraction form
643,311.08/965,281.02 = 454,981.70/x - Step 3: Cross multiply
643,311.08x = 965,281.02 × 454,981.70 - Step 4: Simplify right side
643,311.08x = 439,185,192,356.02 - Step 5: Solve for x
x = 439,185,192,356.02/643,311.08 - Step 6: Final answer
x = 682,694.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.