Finding the Fourth Proportional to 1,107,701.43, 1,528,750.19 and 642,657.75
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Solution
The fourth proportional to 1,107,701.43, 1,528,750.19 and 642,657.75 is: 886,938.60
Step by Step Solution
- Step 1: Write the proportion equation
1,107,701.43 : 1,528,750.19 = 642,657.75 : x - Step 2: Convert to fraction form
1,107,701.43/1,528,750.19 = 642,657.75/x - Step 3: Cross multiply
1,107,701.43x = 1,528,750.19 × 642,657.75 - Step 4: Simplify right side
1,107,701.43x = 982,463,153,291.30 - Step 5: Solve for x
x = 982,463,153,291.30/1,107,701.43 - Step 6: Final answer
x = 886,938.60
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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.