Finding the Fourth Proportional to 1,121,743.80, 1,682,615.70 and 679,375.80
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Solution
The fourth proportional to 1,121,743.80, 1,682,615.70 and 679,375.80 is: 1,019,063.70
Step by Step Solution
- Step 1: Write the proportion equation
1,121,743.80 : 1,682,615.70 = 679,375.80 : x - Step 2: Convert to fraction form
1,121,743.80/1,682,615.70 = 679,375.80/x - Step 3: Cross multiply
1,121,743.80x = 1,682,615.70 × 679,375.80 - Step 4: Simplify right side
1,121,743.80x = 1,143,128,387,280.06 - Step 5: Solve for x
x = 1,143,128,387,280.06/1,121,743.80 - Step 6: Final answer
x = 1,019,063.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.