Finding the Fourth Proportional to 10,520,420.40, 15,769,744.20 and 5,717,962.80
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Solution
The fourth proportional to 10,520,420.40, 15,769,744.20 and 5,717,962.80 is: 8,571,027.32
Step by Step Solution
- Step 1: Write the proportion equation
10,520,420.40 : 15,769,744.20 = 5,717,962.80 : x - Step 2: Convert to fraction form
10,520,420.40/15,769,744.20 = 5,717,962.80/x - Step 3: Cross multiply
10,520,420.40x = 15,769,744.20 × 5,717,962.80 - Step 4: Simplify right side
10,520,420.40x = 90,170,810,701,115.75 - Step 5: Solve for x
x = 90,170,810,701,115.75/10,520,420.40 - Step 6: Final answer
x = 8,571,027.32
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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.