Finding the Fourth Proportional to 1,438,309.91, 1,984,915.34 and 784,971.68
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Solution
The fourth proportional to 1,438,309.91, 1,984,915.34 and 784,971.68 is: 1,083,286.94
Step by Step Solution
- Step 1: Write the proportion equation
1,438,309.91 : 1,984,915.34 = 784,971.68 : x - Step 2: Convert to fraction form
1,438,309.91/1,984,915.34 = 784,971.68/x - Step 3: Cross multiply
1,438,309.91x = 1,984,915.34 × 784,971.68 - Step 4: Simplify right side
1,438,309.91x = 1,558,102,333,078.65 - Step 5: Solve for x
x = 1,558,102,333,078.65/1,438,309.91 - Step 6: Final answer
x = 1,083,286.94
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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.