Finding the Fourth Proportional to 669,403.76, 923,549.10 and 427,825.70
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Solution
The fourth proportional to 669,403.76, 923,549.10 and 427,825.70 is: 590,253.69
Step by Step Solution
- Step 1: Write the proportion equation
669,403.76 : 923,549.10 = 427,825.70 : x - Step 2: Convert to fraction form
669,403.76/923,549.10 = 427,825.70/x - Step 3: Cross multiply
669,403.76x = 923,549.10 × 427,825.70 - Step 4: Simplify right side
669,403.76x = 395,118,040,191.87 - Step 5: Solve for x
x = 395,118,040,191.87/669,403.76 - Step 6: Final answer
x = 590,253.69
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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.