Finding the Fourth Proportional to 12,948,694.70, 19,423,042.05 and 4,428,272.30
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Solution
The fourth proportional to 12,948,694.70, 19,423,042.05 and 4,428,272.30 is: 6,642,408.45
Step by Step Solution
- Step 1: Write the proportion equation
12,948,694.70 : 19,423,042.05 = 4,428,272.30 : x - Step 2: Convert to fraction form
12,948,694.70/19,423,042.05 = 4,428,272.30/x - Step 3: Cross multiply
12,948,694.70x = 19,423,042.05 × 4,428,272.30 - Step 4: Simplify right side
12,948,694.70x = 86,010,519,091,750.22 - Step 5: Solve for x
x = 86,010,519,091,750.22/12,948,694.70 - Step 6: Final answer
x = 6,642,408.45
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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.