Finding the Fourth Proportional to 1,421,156.63, 1,961,201.26 and 776,576.82
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Solution
The fourth proportional to 1,421,156.63, 1,961,201.26 and 776,576.82 is: 1,071,678.80
Step by Step Solution
- Step 1: Write the proportion equation
1,421,156.63 : 1,961,201.26 = 776,576.82 : x - Step 2: Convert to fraction form
1,421,156.63/1,961,201.26 = 776,576.82/x - Step 3: Cross multiply
1,421,156.63x = 1,961,201.26 × 776,576.82 - Step 4: Simplify right side
1,421,156.63x = 1,523,023,437,870.79 - Step 5: Solve for x
x = 1,523,023,437,870.79/1,421,156.63 - Step 6: Final answer
x = 1,071,678.80
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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.