Finding the Fourth Proportional to 1,221,502.14, 1,685,677.23 and 677,648.70
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Solution
The fourth proportional to 1,221,502.14, 1,685,677.23 and 677,648.70 is: 935,157.58
Step by Step Solution
- Step 1: Write the proportion equation
1,221,502.14 : 1,685,677.23 = 677,648.70 : x - Step 2: Convert to fraction form
1,221,502.14/1,685,677.23 = 677,648.70/x - Step 3: Cross multiply
1,221,502.14x = 1,685,677.23 × 677,648.70 - Step 4: Simplify right side
1,221,502.14x = 1,142,296,983,529.10 - Step 5: Solve for x
x = 1,142,296,983,529.10/1,221,502.14 - Step 6: Final answer
x = 935,157.58
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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.