Finding the Fourth Proportional to 644,324.10, 966,486.15 and 405,175.65
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Solution
The fourth proportional to 644,324.10, 966,486.15 and 405,175.65 is: 607,763.48
Step by Step Solution
- Step 1: Write the proportion equation
644,324.10 : 966,486.15 = 405,175.65 : x - Step 2: Convert to fraction form
644,324.10/966,486.15 = 405,175.65/x - Step 3: Cross multiply
644,324.10x = 966,486.15 × 405,175.65 - Step 4: Simplify right side
644,324.10x = 391,596,654,042.25 - Step 5: Solve for x
x = 391,596,654,042.25/644,324.10 - Step 6: Final answer
x = 607,763.48
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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.