Finding the Fourth Proportional to 3,985,609.65, 5,979,363.08 and 1,289,934.88
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Solution
The fourth proportional to 3,985,609.65, 5,979,363.08 and 1,289,934.88 is: 1,935,209.33
Step by Step Solution
- Step 1: Write the proportion equation
3,985,609.65 : 5,979,363.08 = 1,289,934.88 : x - Step 2: Convert to fraction form
3,985,609.65/5,979,363.08 = 1,289,934.88/x - Step 3: Cross multiply
3,985,609.65x = 5,979,363.08 × 1,289,934.88 - Step 4: Simplify right side
3,985,609.65x = 7,712,988,997,076.23 - Step 5: Solve for x
x = 7,712,988,997,076.23/3,985,609.65 - Step 6: Final answer
x = 1,935,209.33
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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.