Finding the Fourth Proportional to 7,452,615.80, 11,178,923.70 and 2,660,461.40
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Solution
The fourth proportional to 7,452,615.80, 11,178,923.70 and 2,660,461.40 is: 3,990,692.10
Step by Step Solution
- Step 1: Write the proportion equation
7,452,615.80 : 11,178,923.70 = 2,660,461.40 : x - Step 2: Convert to fraction form
7,452,615.80/11,178,923.70 = 2,660,461.40/x - Step 3: Cross multiply
7,452,615.80x = 11,178,923.70 × 2,660,461.40 - Step 4: Simplify right side
7,452,615.80x = 29,741,094,997,395.18 - Step 5: Solve for x
x = 29,741,094,997,395.18/7,452,615.80 - Step 6: Final answer
x = 3,990,692.10
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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.