Finding the Fourth Proportional to 2,165,005.76, 2,987,634.08 and 1,198,176.64
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Solution
The fourth proportional to 2,165,005.76, 2,987,634.08 and 1,198,176.64 is: 1,653,442.88
Step by Step Solution
- Step 1: Write the proportion equation
2,165,005.76 : 2,987,634.08 = 1,198,176.64 : x - Step 2: Convert to fraction form
2,165,005.76/2,987,634.08 = 1,198,176.64/x - Step 3: Cross multiply
2,165,005.76x = 2,987,634.08 × 1,198,176.64 - Step 4: Simplify right side
2,165,005.76x = 3,579,713,363,523.89 - Step 5: Solve for x
x = 3,579,713,363,523.89/2,165,005.76 - Step 6: Final answer
x = 1,653,442.88
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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.