Finding the Fourth Proportional to 811,538.63, 1,216,516.84 and 338,359.31
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Solution
The fourth proportional to 811,538.63, 1,216,516.84 and 338,359.31 is: 507,209.12
Step by Step Solution
- Step 1: Write the proportion equation
811,538.63 : 1,216,516.84 = 338,359.31 : x - Step 2: Convert to fraction form
811,538.63/1,216,516.84 = 338,359.31/x - Step 3: Cross multiply
811,538.63x = 1,216,516.84 × 338,359.31 - Step 4: Simplify right side
811,538.63x = 411,619,790,811.40 - Step 5: Solve for x
x = 411,619,790,811.40/811,538.63 - Step 6: Final answer
x = 507,209.12
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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.