Finding the Fourth Proportional to 1,221,375.13, 1,685,699.81 and 677,686.07
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Solution
The fourth proportional to 1,221,375.13, 1,685,699.81 and 677,686.07 is: 935,318.93
Step by Step Solution
- Step 1: Write the proportion equation
1,221,375.13 : 1,685,699.81 = 677,686.07 : x - Step 2: Convert to fraction form
1,221,375.13/1,685,699.81 = 677,686.07/x - Step 3: Cross multiply
1,221,375.13x = 1,685,699.81 × 677,686.07 - Step 4: Simplify right side
1,221,375.13x = 1,142,375,279,645.10 - Step 5: Solve for x
x = 1,142,375,279,645.10/1,221,375.13 - Step 6: Final answer
x = 935,318.93
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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.