Finding the Fourth Proportional to 5,215,517.70, 7,823,276.55 and 3,955,805.70
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Solution
The fourth proportional to 5,215,517.70, 7,823,276.55 and 3,955,805.70 is: 5,933,708.55
Step by Step Solution
- Step 1: Write the proportion equation
5,215,517.70 : 7,823,276.55 = 3,955,805.70 : x - Step 2: Convert to fraction form
5,215,517.70/7,823,276.55 = 3,955,805.70/x - Step 3: Cross multiply
5,215,517.70x = 7,823,276.55 × 3,955,805.70 - Step 4: Simplify right side
5,215,517.70x = 30,947,361,969,166.34 - Step 5: Solve for x
x = 30,947,361,969,166.34/5,215,517.70 - Step 6: Final answer
x = 5,933,708.55
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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.