Finding the Fourth Proportional to 812,634,315.38, 1,121,397,821.70 and 460,212,828.02
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Solution
The fourth proportional to 812,634,315.38, 1,121,397,821.70 and 460,212,828.02 is: 635,072,446.60
Step by Step Solution
- Step 1: Write the proportion equation
812,634,315.38 : 1,121,397,821.70 = 460,212,828.02 : x - Step 2: Convert to fraction form
812,634,315.38/1,121,397,821.70 = 460,212,828.02/x - Step 3: Cross multiply
812,634,315.38x = 1,121,397,821.70 × 460,212,828.02 - Step 4: Simplify right side
812,634,315.38x = 516,081,662,860,024,704 - Step 5: Solve for x
x = 516,081,662,860,024,704/812,634,315.38 - Step 6: Final answer
x = 635,072,446.60
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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.