Finding the Fourth Proportional to 3,420,415.26, 4,718,116.47 and 2,258,872.20
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Solution
The fourth proportional to 3,420,415.26, 4,718,116.47 and 2,258,872.20 is: 3,115,885.45
Step by Step Solution
- Step 1: Write the proportion equation
3,420,415.26 : 4,718,116.47 = 2,258,872.20 : x - Step 2: Convert to fraction form
3,420,415.26/4,718,116.47 = 2,258,872.20/x - Step 3: Cross multiply
3,420,415.26x = 4,718,116.47 × 2,258,872.20 - Step 4: Simplify right side
3,420,415.26x = 10,657,622,130,445.13 - Step 5: Solve for x
x = 10,657,622,130,445.13/3,420,415.26 - Step 6: Final answer
x = 3,115,885.45
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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.