Finding the Fourth Proportional to 1,433,512.44, 1,978,207.38 and 813,430.53
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Solution
The fourth proportional to 1,433,512.44, 1,978,207.38 and 813,430.53 is: 1,122,511.55
Step by Step Solution
- Step 1: Write the proportion equation
1,433,512.44 : 1,978,207.38 = 813,430.53 : x - Step 2: Convert to fraction form
1,433,512.44/1,978,207.38 = 813,430.53/x - Step 3: Cross multiply
1,433,512.44x = 1,978,207.38 × 813,430.53 - Step 4: Simplify right side
1,433,512.44x = 1,609,134,277,563.31 - Step 5: Solve for x
x = 1,609,134,277,563.31/1,433,512.44 - Step 6: Final answer
x = 1,122,511.55
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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.