Finding the Fourth Proportional to 6,440,125.20, 9,661,354.20 and 3,237,190.80
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Solution
The fourth proportional to 6,440,125.20, 9,661,354.20 and 3,237,190.80 is: 4,856,372.50
Step by Step Solution
- Step 1: Write the proportion equation
6,440,125.20 : 9,661,354.20 = 3,237,190.80 : x - Step 2: Convert to fraction form
6,440,125.20/9,661,354.20 = 3,237,190.80/x - Step 3: Cross multiply
6,440,125.20x = 9,661,354.20 × 3,237,190.80 - Step 4: Simplify right side
6,440,125.20x = 31,275,646,931,781.36 - Step 5: Solve for x
x = 31,275,646,931,781.36/6,440,125.20 - Step 6: Final answer
x = 4,856,372.50
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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.