Finding the Fourth Proportional to 3,939,138.20, 5,436,052.10 and 2,220,258.71
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Solution
The fourth proportional to 3,939,138.20, 5,436,052.10 and 2,220,258.71 is: 3,063,980.34
Step by Step Solution
- Step 1: Write the proportion equation
3,939,138.20 : 5,436,052.10 = 2,220,258.71 : x - Step 2: Convert to fraction form
3,939,138.20/5,436,052.10 = 2,220,258.71/x - Step 3: Cross multiply
3,939,138.20x = 5,436,052.10 × 2,220,258.71 - Step 4: Simplify right side
3,939,138.20x = 12,069,441,984,757.24 - Step 5: Solve for x
x = 12,069,441,984,757.24/3,939,138.20 - Step 6: Final answer
x = 3,063,980.34
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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.