Finding the Fourth Proportional to 7,105,964.15, 10,657,877.11 and 1,987,730.62
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Solution
The fourth proportional to 7,105,964.15, 10,657,877.11 and 1,987,730.62 is: 2,981,296.86
Step by Step Solution
- Step 1: Write the proportion equation
7,105,964.15 : 10,657,877.11 = 1,987,730.62 : x - Step 2: Convert to fraction form
7,105,964.15/10,657,877.11 = 1,987,730.62/x - Step 3: Cross multiply
7,105,964.15x = 10,657,877.11 × 1,987,730.62 - Step 4: Simplify right side
7,105,964.15x = 21,184,988,644,130.09 - Step 5: Solve for x
x = 21,184,988,644,130.09/7,105,964.15 - Step 6: Final answer
x = 2,981,296.86
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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.