Finding the Fourth Proportional to 3,642,803,644.78, 5,027,070,711.72 and 1,972,052,785.99
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Solution
The fourth proportional to 3,642,803,644.78, 5,027,070,711.72 and 1,972,052,785.99 is: 2,721,433,755.19
Step by Step Solution
- Step 1: Write the proportion equation
3,642,803,644.78 : 5,027,070,711.72 = 1,972,052,785.99 : x - Step 2: Convert to fraction form
3,642,803,644.78/5,027,070,711.72 = 1,972,052,785.99/x - Step 3: Cross multiply
3,642,803,644.78x = 5,027,070,711.72 × 1,972,052,785.99 - Step 4: Simplify right side
3,642,803,644.78x = 9,913,648,802,416,158,720 - Step 5: Solve for x
x = 9,913,648,802,416,158,720/3,642,803,644.78 - Step 6: Final answer
x = 2,721,433,755.19
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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.