Finding the Fourth Proportional to 1,221,110.15, 1,685,235.49 and 677,421.09
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Solution
The fourth proportional to 1,221,110.15, 1,685,235.49 and 677,421.09 is: 934,898.51
Step by Step Solution
- Step 1: Write the proportion equation
1,221,110.15 : 1,685,235.49 = 677,421.09 : x - Step 2: Convert to fraction form
1,221,110.15/1,685,235.49 = 677,421.09/x - Step 3: Cross multiply
1,221,110.15x = 1,685,235.49 × 677,421.09 - Step 4: Simplify right side
1,221,110.15x = 1,141,614,062,542.48 - Step 5: Solve for x
x = 1,141,614,062,542.48/1,221,110.15 - Step 6: Final answer
x = 934,898.51
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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.