Finding the Fourth Proportional to 4,579,138.80, 6,868,708.20 and 2,187,654.30
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Solution
The fourth proportional to 4,579,138.80, 6,868,708.20 and 2,187,654.30 is: 3,281,481.45
Step by Step Solution
- Step 1: Write the proportion equation
4,579,138.80 : 6,868,708.20 = 2,187,654.30 : x - Step 2: Convert to fraction form
4,579,138.80/6,868,708.20 = 2,187,654.30/x - Step 3: Cross multiply
4,579,138.80x = 6,868,708.20 × 2,187,654.30 - Step 4: Simplify right side
4,579,138.80x = 15,026,359,029,175.26 - Step 5: Solve for x
x = 15,026,359,029,175.26/4,579,138.80 - Step 6: Final answer
x = 3,281,481.45
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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.