Finding the Fourth Proportional to 2,165,420.96, 2,988,204.72 and 1,198,553.12
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Solution
The fourth proportional to 2,165,420.96, 2,988,204.72 and 1,198,553.12 is: 1,653,961.13
Step by Step Solution
- Step 1: Write the proportion equation
2,165,420.96 : 2,988,204.72 = 1,198,553.12 : x - Step 2: Convert to fraction form
2,165,420.96/2,988,204.72 = 1,198,553.12/x - Step 3: Cross multiply
2,165,420.96x = 2,988,204.72 × 1,198,553.12 - Step 4: Simplify right side
2,165,420.96x = 3,581,522,090,354.73 - Step 5: Solve for x
x = 3,581,522,090,354.73/2,165,420.96 - Step 6: Final answer
x = 1,653,961.13
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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.