Finding the Fourth Proportional to 696,927.80, 1,045,391.70 and 431,207.30
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Solution
The fourth proportional to 696,927.80, 1,045,391.70 and 431,207.30 is: 646,810.95
Step by Step Solution
- Step 1: Write the proportion equation
696,927.80 : 1,045,391.70 = 431,207.30 : x - Step 2: Convert to fraction form
696,927.80/1,045,391.70 = 431,207.30/x - Step 3: Cross multiply
696,927.80x = 1,045,391.70 × 431,207.30 - Step 4: Simplify right side
696,927.80x = 450,780,532,399.41 - Step 5: Solve for x
x = 450,780,532,399.41/696,927.80 - Step 6: Final answer
x = 646,810.95
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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.