Finding the Fourth Proportional to 485,750.80, 727,459.80 and 392,438.80
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Solution
The fourth proportional to 485,750.80, 727,459.80 and 392,438.80 is: 587,715.86
Step by Step Solution
- Step 1: Write the proportion equation
485,750.80 : 727,459.80 = 392,438.80 : x - Step 2: Convert to fraction form
485,750.80/727,459.80 = 392,438.80/x - Step 3: Cross multiply
485,750.80x = 727,459.80 × 392,438.80 - Step 4: Simplify right side
485,750.80x = 285,483,450,960.24 - Step 5: Solve for x
x = 285,483,450,960.24/485,750.80 - Step 6: Final answer
x = 587,715.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.