Finding the Fourth Proportional to 7,920,291.97, 10,934,939.42 and 5,443,776.91
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Solution
The fourth proportional to 7,920,291.97, 10,934,939.42 and 5,443,776.91 is: 7,515,805.09
Step by Step Solution
- Step 1: Write the proportion equation
7,920,291.97 : 10,934,939.42 = 5,443,776.91 : x - Step 2: Convert to fraction form
7,920,291.97/10,934,939.42 = 5,443,776.91/x - Step 3: Cross multiply
7,920,291.97x = 10,934,939.42 × 5,443,776.91 - Step 4: Simplify right side
7,920,291.97x = 59,527,370,726,844.80 - Step 5: Solve for x
x = 59,527,370,726,844.80/7,920,291.97 - Step 6: Final answer
x = 7,515,805.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.