Finding the Fourth Proportional to 1,972,620,740.27, 2,721,184,554.02 and 1,219,693,233.68
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Solution
The fourth proportional to 1,972,620,740.27, 2,721,184,554.02 and 1,219,693,233.68 is: 1,682,538,523.69
Step by Step Solution
- Step 1: Write the proportion equation
1,972,620,740.27 : 2,721,184,554.02 = 1,219,693,233.68 : x - Step 2: Convert to fraction form
1,972,620,740.27/2,721,184,554.02 = 1,219,693,233.68/x - Step 3: Cross multiply
1,972,620,740.27x = 2,721,184,554.02 × 1,219,693,233.68 - Step 4: Simplify right side
1,972,620,740.27x = 3,319,010,388,129,766,400 - Step 5: Solve for x
x = 3,319,010,388,129,766,400/1,972,620,740.27 - Step 6: Final answer
x = 1,682,538,523.69
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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.