Finding the Fourth Proportional to 1,221,331.14, 1,685,463.99 and 677,449.21
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Solution
The fourth proportional to 1,221,331.14, 1,685,463.99 and 677,449.21 is: 934,894.90
Step by Step Solution
- Step 1: Write the proportion equation
1,221,331.14 : 1,685,463.99 = 677,449.21 : x - Step 2: Convert to fraction form
1,221,331.14/1,685,463.99 = 677,449.21/x - Step 3: Cross multiply
1,221,331.14x = 1,685,463.99 × 677,449.21 - Step 4: Simplify right side
1,221,331.14x = 1,141,816,248,508.95 - Step 5: Solve for x
x = 1,141,816,248,508.95/1,221,331.14 - Step 6: Final answer
x = 934,894.90
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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.