Finding the Fourth Proportional to 3,938,350.80, 5,434,789.74 and 2,172,319.09
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Solution
The fourth proportional to 3,938,350.80, 5,434,789.74 and 2,172,319.09 is: 2,997,726.23
Step by Step Solution
- Step 1: Write the proportion equation
3,938,350.80 : 5,434,789.74 = 2,172,319.09 : x - Step 2: Convert to fraction form
3,938,350.80/5,434,789.74 = 2,172,319.09/x - Step 3: Cross multiply
3,938,350.80x = 5,434,789.74 × 2,172,319.09 - Step 4: Simplify right side
3,938,350.80x = 11,806,097,502,338.14 - Step 5: Solve for x
x = 11,806,097,502,338.14/3,938,350.80 - Step 6: Final answer
x = 2,997,726.23
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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.