Finding the Fourth Proportional to 1,296,366.12, 1,788,820.20 and 723,430.44
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Solution
The fourth proportional to 1,296,366.12, 1,788,820.20 and 723,430.44 is: 998,241.90
Step by Step Solution
- Step 1: Write the proportion equation
1,296,366.12 : 1,788,820.20 = 723,430.44 : x - Step 2: Convert to fraction form
1,296,366.12/1,788,820.20 = 723,430.44/x - Step 3: Cross multiply
1,296,366.12x = 1,788,820.20 × 723,430.44 - Step 4: Simplify right side
1,296,366.12x = 1,294,086,984,366.89 - Step 5: Solve for x
x = 1,294,086,984,366.89/1,296,366.12 - Step 6: Final answer
x = 998,241.90
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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.