Finding the Fourth Proportional to 2,164,686.14, 2,987,582.16 and 1,246,736.64
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Solution
The fourth proportional to 2,164,686.14, 2,987,582.16 and 1,246,736.64 is: 1,720,678.15
Step by Step Solution
- Step 1: Write the proportion equation
2,164,686.14 : 2,987,582.16 = 1,246,736.64 : x - Step 2: Convert to fraction form
2,164,686.14/2,987,582.16 = 1,246,736.64/x - Step 3: Cross multiply
2,164,686.14x = 2,987,582.16 × 1,246,736.64 - Step 4: Simplify right side
2,164,686.14x = 3,724,728,143,882.34 - Step 5: Solve for x
x = 3,724,728,143,882.34/2,164,686.14 - Step 6: Final answer
x = 1,720,678.15
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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.