Finding the Fourth Proportional to 686,338.24, 1,028,369.28 and 485,663.92
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Solution
The fourth proportional to 686,338.24, 1,028,369.28 and 485,663.92 is: 727,690.56
Step by Step Solution
- Step 1: Write the proportion equation
686,338.24 : 1,028,369.28 = 485,663.92 : x - Step 2: Convert to fraction form
686,338.24/1,028,369.28 = 485,663.92/x - Step 3: Cross multiply
686,338.24x = 1,028,369.28 × 485,663.92 - Step 4: Simplify right side
686,338.24x = 499,441,855,732.38 - Step 5: Solve for x
x = 499,441,855,732.38/686,338.24 - Step 6: Final answer
x = 727,690.56
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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.