Finding the Fourth Proportional to 1,273,238,769.36, 1,909,748,753.28 and 775,120,009.44
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Solution
The fourth proportional to 1,273,238,769.36, 1,909,748,753.28 and 775,120,009.44 is: 1,162,613,413.36
Step by Step Solution
- Step 1: Write the proportion equation
1,273,238,769.36 : 1,909,748,753.28 = 775,120,009.44 : x - Step 2: Convert to fraction form
1,273,238,769.36/1,909,748,753.28 = 775,120,009.44/x - Step 3: Cross multiply
1,273,238,769.36x = 1,909,748,753.28 × 775,120,009.44 - Step 4: Simplify right side
1,273,238,769.36x = 1,480,284,471,670,422,016 - Step 5: Solve for x
x = 1,480,284,471,670,422,016/1,273,238,769.36 - Step 6: Final answer
x = 1,162,613,413.36
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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.