Finding the Fourth Proportional to 1,029,211.92, 1,420,387.25 and 621,412.97
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Solution
The fourth proportional to 1,029,211.92, 1,420,387.25 and 621,412.97 is: 857,595.05
Step by Step Solution
- Step 1: Write the proportion equation
1,029,211.92 : 1,420,387.25 = 621,412.97 : x - Step 2: Convert to fraction form
1,029,211.92/1,420,387.25 = 621,412.97/x - Step 3: Cross multiply
1,029,211.92x = 1,420,387.25 × 621,412.97 - Step 4: Simplify right side
1,029,211.92x = 882,647,049,363.63 - Step 5: Solve for x
x = 882,647,049,363.63/1,029,211.92 - Step 6: Final answer
x = 857,595.05
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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.