Finding the Fourth Proportional to 1,421,558.19, 1,961,721.36 and 776,983
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Solution
The fourth proportional to 1,421,558.19, 1,961,721.36 and 776,983 is: 1,072,220.72
Step by Step Solution
- Step 1: Write the proportion equation
1,421,558.19 : 1,961,721.36 = 776,983 : x - Step 2: Convert to fraction form
1,421,558.19/1,961,721.36 = 776,983/x - Step 3: Cross multiply
1,421,558.19x = 1,961,721.36 × 776,983 - Step 4: Simplify right side
1,421,558.19x = 1,524,224,147,456.88 - Step 5: Solve for x
x = 1,524,224,147,456.88/1,421,558.19 - Step 6: Final answer
x = 1,072,220.72
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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.