Finding the Fourth Proportional to 12,228,728.80, 18,343,136.94 and 3,709,139.08
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Solution
The fourth proportional to 12,228,728.80, 18,343,136.94 and 3,709,139.08 is: 5,563,721.89
Step by Step Solution
- Step 1: Write the proportion equation
12,228,728.80 : 18,343,136.94 = 3,709,139.08 : x - Step 2: Convert to fraction form
12,228,728.80/18,343,136.94 = 3,709,139.08/x - Step 3: Cross multiply
12,228,728.80x = 18,343,136.94 × 3,709,139.08 - Step 4: Simplify right side
12,228,728.80x = 68,037,246,073,945.62 - Step 5: Solve for x
x = 68,037,246,073,945.62/12,228,728.80 - Step 6: Final answer
x = 5,563,721.89
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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.