Finding the Fourth Proportional to 1,276,327,771.44, 1,761,332,330.16 and 689,616,907.44
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Solution
The fourth proportional to 1,276,327,771.44, 1,761,332,330.16 and 689,616,907.44 is: 951,671,335.28
Step by Step Solution
- Step 1: Write the proportion equation
1,276,327,771.44 : 1,761,332,330.16 = 689,616,907.44 : x - Step 2: Convert to fraction form
1,276,327,771.44/1,761,332,330.16 = 689,616,907.44/x - Step 3: Cross multiply
1,276,327,771.44x = 1,761,332,330.16 × 689,616,907.44 - Step 4: Simplify right side
1,276,327,771.44x = 1,214,644,554,499,028,480 - Step 5: Solve for x
x = 1,214,644,554,499,028,480/1,276,327,771.44 - Step 6: Final answer
x = 951,671,335.28
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1.5x scale
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.