Finding the Fourth Proportional to 725,682.21, 1,088,381.16 and 689,676.09
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Solution
The fourth proportional to 725,682.21, 1,088,381.16 and 689,676.09 is: 1,034,379.03
Step by Step Solution
- Step 1: Write the proportion equation
725,682.21 : 1,088,381.16 = 689,676.09 : x - Step 2: Convert to fraction form
725,682.21/1,088,381.16 = 689,676.09/x - Step 3: Cross multiply
725,682.21x = 1,088,381.16 × 689,676.09 - Step 4: Simplify right side
725,682.21x = 750,630,462,858.46 - Step 5: Solve for x
x = 750,630,462,858.46/725,682.21 - Step 6: Final answer
x = 1,034,379.03
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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.