Finding the Fourth Proportional to 540,997.11, 746,631.47 and 311,562.99
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Solution
The fourth proportional to 540,997.11, 746,631.47 and 311,562.99 is: 429,988.87
Step by Step Solution
- Step 1: Write the proportion equation
540,997.11 : 746,631.47 = 311,562.99 : x - Step 2: Convert to fraction form
540,997.11/746,631.47 = 311,562.99/x - Step 3: Cross multiply
540,997.11x = 746,631.47 × 311,562.99 - Step 4: Simplify right side
540,997.11x = 232,622,734,000.20 - Step 5: Solve for x
x = 232,622,734,000.20/540,997.11 - Step 6: Final answer
x = 429,988.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.