Finding the Fourth Proportional to 1,431,763.70, 1,975,840.43 and 778,396.10
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Solution
The fourth proportional to 1,431,763.70, 1,975,840.43 and 778,396.10 is: 1,074,190.16
Step by Step Solution
- Step 1: Write the proportion equation
1,431,763.70 : 1,975,840.43 = 778,396.10 : x - Step 2: Convert to fraction form
1,431,763.70/1,975,840.43 = 778,396.10/x - Step 3: Cross multiply
1,431,763.70x = 1,975,840.43 × 778,396.10 - Step 4: Simplify right side
1,431,763.70x = 1,537,986,471,163.14 - Step 5: Solve for x
x = 1,537,986,471,163.14/1,431,763.70 - Step 6: Final answer
x = 1,074,190.16
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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.