Finding the Fourth Proportional to 738,937.28, 1,019,732.88 and 399,405.53
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Solution
The fourth proportional to 738,937.28, 1,019,732.88 and 399,405.53 is: 551,179.32
Step by Step Solution
- Step 1: Write the proportion equation
738,937.28 : 1,019,732.88 = 399,405.53 : x - Step 2: Convert to fraction form
738,937.28/1,019,732.88 = 399,405.53/x - Step 3: Cross multiply
738,937.28x = 1,019,732.88 × 399,405.53 - Step 4: Simplify right side
738,937.28x = 407,286,944,299.13 - Step 5: Solve for x
x = 407,286,944,299.13/738,937.28 - Step 6: Final answer
x = 551,179.32
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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.