Finding the Fourth Proportional to 1,128,703.36, 1,693,106.88 and 287,262.40
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Solution
The fourth proportional to 1,128,703.36, 1,693,106.88 and 287,262.40 is: 430,906.79
Step by Step Solution
- Step 1: Write the proportion equation
1,128,703.36 : 1,693,106.88 = 287,262.40 : x - Step 2: Convert to fraction form
1,128,703.36/1,693,106.88 = 287,262.40/x - Step 3: Cross multiply
1,128,703.36x = 1,693,106.88 × 287,262.40 - Step 4: Simplify right side
1,128,703.36x = 486,365,945,805.31 - Step 5: Solve for x
x = 486,365,945,805.31/1,128,703.36 - Step 6: Final answer
x = 430,906.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.