Finding the Fourth Proportional to 1,421,779.98, 1,962,056.52 and 777,202.80
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Solution
The fourth proportional to 1,421,779.98, 1,962,056.52 and 777,202.80 is: 1,072,539.94
Step by Step Solution
- Step 1: Write the proportion equation
1,421,779.98 : 1,962,056.52 = 777,202.80 : x - Step 2: Convert to fraction form
1,421,779.98/1,962,056.52 = 777,202.80/x - Step 3: Cross multiply
1,421,779.98x = 1,962,056.52 × 777,202.80 - Step 4: Simplify right side
1,421,779.98x = 1,524,915,821,102.26 - Step 5: Solve for x
x = 1,524,915,821,102.26/1,421,779.98 - Step 6: Final answer
x = 1,072,539.94
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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.