Finding the Fourth Proportional to 8,521,371.30, 12,782,051.34 and 2,131,618.80
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Solution
The fourth proportional to 8,521,371.30, 12,782,051.34 and 2,131,618.80 is: 3,197,426.80
Step by Step Solution
- Step 1: Write the proportion equation
8,521,371.30 : 12,782,051.34 = 2,131,618.80 : x - Step 2: Convert to fraction form
8,521,371.30/12,782,051.34 = 2,131,618.80/x - Step 3: Cross multiply
8,521,371.30x = 12,782,051.34 × 2,131,618.80 - Step 4: Simplify right side
8,521,371.30x = 27,246,460,938,909.19 - Step 5: Solve for x
x = 27,246,460,938,909.19/8,521,371.30 - Step 6: Final answer
x = 3,197,426.80
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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.