Finding the Fourth Proportional to 1,130,361.68, 1,695,279.48 and 420,723.92
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Solution
The fourth proportional to 1,130,361.68, 1,695,279.48 and 420,723.92 is: 630,987.98
Step by Step Solution
- Step 1: Write the proportion equation
1,130,361.68 : 1,695,279.48 = 420,723.92 : x - Step 2: Convert to fraction form
1,130,361.68/1,695,279.48 = 420,723.92/x - Step 3: Cross multiply
1,130,361.68x = 1,695,279.48 × 420,723.92 - Step 4: Simplify right side
1,130,361.68x = 713,244,628,321.16 - Step 5: Solve for x
x = 713,244,628,321.16/1,130,361.68 - Step 6: Final answer
x = 630,987.98
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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.