Finding the Fourth Proportional to 1,421,833.92, 1,962,126.36 and 777,254.40
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Solution
The fourth proportional to 1,421,833.92, 1,962,126.36 and 777,254.40 is: 1,072,608.64
Step by Step Solution
- Step 1: Write the proportion equation
1,421,833.92 : 1,962,126.36 = 777,254.40 : x - Step 2: Convert to fraction form
1,421,833.92/1,962,126.36 = 777,254.40/x - Step 3: Cross multiply
1,421,833.92x = 1,962,126.36 × 777,254.40 - Step 4: Simplify right side
1,421,833.92x = 1,525,071,346,665.98 - Step 5: Solve for x
x = 1,525,071,346,665.98/1,421,833.92 - Step 6: Final answer
x = 1,072,608.64
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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.