Finding the Fourth Proportional to 1,318,213.80, 1,977,320.70 and 609,625.80
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Solution
The fourth proportional to 1,318,213.80, 1,977,320.70 and 609,625.80 is: 914,438.70
Step by Step Solution
- Step 1: Write the proportion equation
1,318,213.80 : 1,977,320.70 = 609,625.80 : x - Step 2: Convert to fraction form
1,318,213.80/1,977,320.70 = 609,625.80/x - Step 3: Cross multiply
1,318,213.80x = 1,977,320.70 × 609,625.80 - Step 4: Simplify right side
1,318,213.80x = 1,205,425,713,594.06 - Step 5: Solve for x
x = 1,205,425,713,594.06/1,318,213.80 - Step 6: Final answer
x = 914,438.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.