Finding the Fourth Proportional to 6,438,136.20, 9,658,370.70 and 3,235,201.80
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Solution
The fourth proportional to 6,438,136.20, 9,658,370.70 and 3,235,201.80 is: 4,853,388.82
Step by Step Solution
- Step 1: Write the proportion equation
6,438,136.20 : 9,658,370.70 = 3,235,201.80 : x - Step 2: Convert to fraction form
6,438,136.20/9,658,370.70 = 3,235,201.80/x - Step 3: Cross multiply
6,438,136.20x = 9,658,370.70 × 3,235,201.80 - Step 4: Simplify right side
6,438,136.20x = 31,246,778,273,707.25 - Step 5: Solve for x
x = 31,246,778,273,707.25/6,438,136.20 - Step 6: Final answer
x = 4,853,388.82
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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.