Finding the Fourth Proportional to 1,121,010,390.20, 1,681,515,585.30 and 654,192,615.80
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Solution
The fourth proportional to 1,121,010,390.20, 1,681,515,585.30 and 654,192,615.80 is: 981,288,923.70
Step by Step Solution
- Step 1: Write the proportion equation
1,121,010,390.20 : 1,681,515,585.30 = 654,192,615.80 : x - Step 2: Convert to fraction form
1,121,010,390.20/1,681,515,585.30 = 654,192,615.80/x - Step 3: Cross multiply
1,121,010,390.20x = 1,681,515,585.30 × 654,192,615.80 - Step 4: Simplify right side
1,121,010,390.20x = 1,100,035,079,255,874,944 - Step 5: Solve for x
x = 1,100,035,079,255,874,944/1,121,010,390.20 - Step 6: Final answer
x = 981,288,923.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.