Finding the Fourth Proportional to 1,330,347.87, 1,994,259.33 and 431,157.75
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Solution
The fourth proportional to 1,330,347.87, 1,994,259.33 and 431,157.75 is: 646,327.46
Step by Step Solution
- Step 1: Write the proportion equation
1,330,347.87 : 1,994,259.33 = 431,157.75 : x - Step 2: Convert to fraction form
1,330,347.87/1,994,259.33 = 431,157.75/x - Step 3: Cross multiply
1,330,347.87x = 1,994,259.33 × 431,157.75 - Step 4: Simplify right side
1,330,347.87x = 859,840,365,639.31 - Step 5: Solve for x
x = 859,840,365,639.31/1,330,347.87 - Step 6: Final answer
x = 646,327.46
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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.