Finding the Fourth Proportional to 3,178,286.70, 4,386,162.99 and 1,727,977.65
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Solution
The fourth proportional to 3,178,286.70, 4,386,162.99 and 1,727,977.65 is: 2,384,678.39
Step by Step Solution
- Step 1: Write the proportion equation
3,178,286.70 : 4,386,162.99 = 1,727,977.65 : x - Step 2: Convert to fraction form
3,178,286.70/4,386,162.99 = 1,727,977.65/x - Step 3: Cross multiply
3,178,286.70x = 4,386,162.99 × 1,727,977.65 - Step 4: Simplify right side
3,178,286.70x = 7,579,191,615,977.17 - Step 5: Solve for x
x = 7,579,191,615,977.17/3,178,286.70 - Step 6: Final answer
x = 2,384,678.39
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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.