Finding the Fourth Proportional to 1,431,628.20, 1,975,653.69 and 787,090.14
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Solution
The fourth proportional to 1,431,628.20, 1,975,653.69 and 787,090.14 is: 1,086,188.12
Step by Step Solution
- Step 1: Write the proportion equation
1,431,628.20 : 1,975,653.69 = 787,090.14 : x - Step 2: Convert to fraction form
1,431,628.20/1,975,653.69 = 787,090.14/x - Step 3: Cross multiply
1,431,628.20x = 1,975,653.69 × 787,090.14 - Step 4: Simplify right side
1,431,628.20x = 1,555,017,539,453.62 - Step 5: Solve for x
x = 1,555,017,539,453.62/1,431,628.20 - Step 6: Final answer
x = 1,086,188.12
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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.