Finding the Fourth Proportional to 3,175,318.80, 4,382,315.56 and 1,886,164.31
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Solution
The fourth proportional to 3,175,318.80, 4,382,315.56 and 1,886,164.31 is: 2,603,129.87
Step by Step Solution
- Step 1: Write the proportion equation
3,175,318.80 : 4,382,315.56 = 1,886,164.31 : x - Step 2: Convert to fraction form
3,175,318.80/4,382,315.56 = 1,886,164.31/x - Step 3: Cross multiply
3,175,318.80x = 4,382,315.56 × 1,886,164.31 - Step 4: Simplify right side
3,175,318.80x = 8,265,767,217,743.16 - Step 5: Solve for x
x = 8,265,767,217,743.16/3,175,318.80 - Step 6: Final answer
x = 2,603,129.87
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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.