Finding the Fourth Proportional to 1,292,353.05, 1,783,647.75 and 776,394.18
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Solution
The fourth proportional to 1,292,353.05, 1,783,647.75 and 776,394.18 is: 1,071,544.45
Step by Step Solution
- Step 1: Write the proportion equation
1,292,353.05 : 1,783,647.75 = 776,394.18 : x - Step 2: Convert to fraction form
1,292,353.05/1,783,647.75 = 776,394.18/x - Step 3: Cross multiply
1,292,353.05x = 1,783,647.75 × 776,394.18 - Step 4: Simplify right side
1,292,353.05x = 1,384,813,732,270.10 - Step 5: Solve for x
x = 1,384,813,732,270.10/1,292,353.05 - Step 6: Final answer
x = 1,071,544.45
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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.