Finding the Fourth Proportional to 1,275,563,212.11, 1,760,277,218.07 and 688,852,348.11
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Solution
The fourth proportional to 1,275,563,212.11, 1,760,277,218.07 and 688,852,348.11 is: 950,616,232.48
Step by Step Solution
- Step 1: Write the proportion equation
1,275,563,212.11 : 1,760,277,218.07 = 688,852,348.11 : x - Step 2: Convert to fraction form
1,275,563,212.11/1,760,277,218.07 = 688,852,348.11/x - Step 3: Cross multiply
1,275,563,212.11x = 1,760,277,218.07 × 688,852,348.11 - Step 4: Simplify right side
1,275,563,212.11x = 1,212,571,094,992,058,112 - Step 5: Solve for x
x = 1,212,571,094,992,058,112/1,275,563,212.11 - Step 6: Final answer
x = 950,616,232.48
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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.