Finding the Fourth Proportional to 1,291,449.99, 1,782,200.97 and 718,490.01
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Solution
The fourth proportional to 1,291,449.99, 1,782,200.97 and 718,490.01 is: 991,516.20
Step by Step Solution
- Step 1: Write the proportion equation
1,291,449.99 : 1,782,200.97 = 718,490.01 : x - Step 2: Convert to fraction form
1,291,449.99/1,782,200.97 = 718,490.01/x - Step 3: Cross multiply
1,291,449.99x = 1,782,200.97 × 718,490.01 - Step 4: Simplify right side
1,291,449.99x = 1,280,493,592,757.31 - Step 5: Solve for x
x = 1,280,493,592,757.31/1,291,449.99 - Step 6: Final answer
x = 991,516.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.