Finding the Fourth Proportional to 1,328,286.81, 1,833,509.09 and 784,424.79
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Solution
The fourth proportional to 1,328,286.81, 1,833,509.09 and 784,424.79 is: 1,082,785.71
Step by Step Solution
- Step 1: Write the proportion equation
1,328,286.81 : 1,833,509.09 = 784,424.79 : x - Step 2: Convert to fraction form
1,328,286.81/1,833,509.09 = 784,424.79/x - Step 3: Cross multiply
1,328,286.81x = 1,833,509.09 × 784,424.79 - Step 4: Simplify right side
1,328,286.81x = 1,438,249,978,964.22 - Step 5: Solve for x
x = 1,438,249,978,964.22/1,328,286.81 - Step 6: Final answer
x = 1,082,785.71
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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.