Finding the Fourth Proportional to 1,320,008.79, 1,821,612.90 and 716,396.79
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Solution
The fourth proportional to 1,320,008.79, 1,821,612.90 and 716,396.79 is: 988,627.99
Step by Step Solution
- Step 1: Write the proportion equation
1,320,008.79 : 1,821,612.90 = 716,396.79 : x - Step 2: Convert to fraction form
1,320,008.79/1,821,612.90 = 716,396.79/x - Step 3: Cross multiply
1,320,008.79x = 1,821,612.90 × 716,396.79 - Step 4: Simplify right side
1,320,008.79x = 1,304,997,634,182.59 - Step 5: Solve for x
x = 1,304,997,634,182.59/1,320,008.79 - Step 6: Final answer
x = 988,627.99
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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.