Finding the Fourth Proportional to 4,258,643.40, 6,387,965.10 and 2,236,105.80
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Solution
The fourth proportional to 4,258,643.40, 6,387,965.10 and 2,236,105.80 is: 3,354,158.70
Step by Step Solution
- Step 1: Write the proportion equation
4,258,643.40 : 6,387,965.10 = 2,236,105.80 : x - Step 2: Convert to fraction form
4,258,643.40/6,387,965.10 = 2,236,105.80/x - Step 3: Cross multiply
4,258,643.40x = 6,387,965.10 × 2,236,105.80 - Step 4: Simplify right side
4,258,643.40x = 14,284,165,810,307.58 - Step 5: Solve for x
x = 14,284,165,810,307.58/4,258,643.40 - Step 6: Final answer
x = 3,354,158.70
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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.