Finding the Fourth Proportional to 669,318.12, 923,391.90 and 427,537.98
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Solution
The fourth proportional to 669,318.12, 923,391.90 and 427,537.98 is: 589,831.79
Step by Step Solution
- Step 1: Write the proportion equation
669,318.12 : 923,391.90 = 427,537.98 : x - Step 2: Convert to fraction form
669,318.12/923,391.90 = 427,537.98/x - Step 3: Cross multiply
669,318.12x = 923,391.90 × 427,537.98 - Step 4: Simplify right side
669,318.12x = 394,785,107,674.36 - Step 5: Solve for x
x = 394,785,107,674.36/669,318.12 - Step 6: Final answer
x = 589,831.79
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1.5x scale
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.