Finding the Fourth Proportional to 2,660,175.80, 3,990,263.70 and 1,329,999.80
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Solution
The fourth proportional to 2,660,175.80, 3,990,263.70 and 1,329,999.80 is: 1,994,999.70
Step by Step Solution
- Step 1: Write the proportion equation
2,660,175.80 : 3,990,263.70 = 1,329,999.80 : x - Step 2: Convert to fraction form
2,660,175.80/3,990,263.70 = 1,329,999.80/x - Step 3: Cross multiply
2,660,175.80x = 3,990,263.70 × 1,329,999.80 - Step 4: Simplify right side
2,660,175.80x = 5,307,049,922,947.26 - Step 5: Solve for x
x = 5,307,049,922,947.26/2,660,175.80 - Step 6: Final answer
x = 1,994,999.70
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1.5x scale
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.