Finding the Fourth Proportional to 686,384.70, 1,028,964.68 and 349,236.78
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Solution
The fourth proportional to 686,384.70, 1,028,964.68 and 349,236.78 is: 523,543.59
Step by Step Solution
- Step 1: Write the proportion equation
686,384.70 : 1,028,964.68 = 349,236.78 : x - Step 2: Convert to fraction form
686,384.70/1,028,964.68 = 349,236.78/x - Step 3: Cross multiply
686,384.70x = 1,028,964.68 × 349,236.78 - Step 4: Simplify right side
686,384.70x = 359,352,311,576.93 - Step 5: Solve for x
x = 359,352,311,576.93/686,384.70 - Step 6: Final answer
x = 523,543.59
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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.