Finding the Fourth Proportional to 1,221,481.35, 1,685,564.84 and 677,615.76
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Solution
The fourth proportional to 1,221,481.35, 1,685,564.84 and 677,615.76 is: 935,065.69
Step by Step Solution
- Step 1: Write the proportion equation
1,221,481.35 : 1,685,564.84 = 677,615.76 : x - Step 2: Convert to fraction form
1,221,481.35/1,685,564.84 = 677,615.76/x - Step 3: Cross multiply
1,221,481.35x = 1,685,564.84 × 677,615.76 - Step 4: Simplify right side
1,221,481.35x = 1,142,165,301,779.92 - Step 5: Solve for x
x = 1,142,165,301,779.92/1,221,481.35 - Step 6: Final answer
x = 935,065.69
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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.