Finding the Fourth Proportional to 1,378,771.74, 1,902,704.92 and 775,159.74
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Solution
The fourth proportional to 1,378,771.74, 1,902,704.92 and 775,159.74 is: 1,069,720.39
Step by Step Solution
- Step 1: Write the proportion equation
1,378,771.74 : 1,902,704.92 = 775,159.74 : x - Step 2: Convert to fraction form
1,378,771.74/1,902,704.92 = 775,159.74/x - Step 3: Cross multiply
1,378,771.74x = 1,902,704.92 × 775,159.74 - Step 4: Simplify right side
1,378,771.74x = 1,474,900,249,146.02 - Step 5: Solve for x
x = 1,474,900,249,146.02/1,378,771.74 - Step 6: Final answer
x = 1,069,720.39
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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.