Finding the Fourth Proportional to 1,292,363.62, 1,784,954.82 and 861,895.60
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Solution
The fourth proportional to 1,292,363.62, 1,784,954.82 and 861,895.60 is: 1,190,411.65
Step by Step Solution
- Step 1: Write the proportion equation
1,292,363.62 : 1,784,954.82 = 861,895.60 : x - Step 2: Convert to fraction form
1,292,363.62/1,784,954.82 = 861,895.60/x - Step 3: Cross multiply
1,292,363.62x = 1,784,954.82 × 861,895.60 - Step 4: Simplify right side
1,292,363.62x = 1,538,444,705,556.79 - Step 5: Solve for x
x = 1,538,444,705,556.79/1,292,363.62 - Step 6: Final answer
x = 1,190,411.65
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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.