Finding the Fourth Proportional to 1,427,625.12, 2,140,965.84 and 480,760.80
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Solution
The fourth proportional to 1,427,625.12, 2,140,965.84 and 480,760.80 is: 720,982.31
Step by Step Solution
- Step 1: Write the proportion equation
1,427,625.12 : 2,140,965.84 = 480,760.80 : x - Step 2: Convert to fraction form
1,427,625.12/2,140,965.84 = 480,760.80/x - Step 3: Cross multiply
1,427,625.12x = 2,140,965.84 × 480,760.80 - Step 4: Simplify right side
1,427,625.12x = 1,029,292,450,011.07 - Step 5: Solve for x
x = 1,029,292,450,011.07/1,427,625.12 - Step 6: Final answer
x = 720,982.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.