Finding the Fourth Proportional to 1,620,450,847.79, 2,236,224,439.07 and 877,894,910.54
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Solution
The fourth proportional to 1,620,450,847.79, 2,236,224,439.07 and 877,894,910.54 is: 1,211,496,205.86
Step by Step Solution
- Step 1: Write the proportion equation
1,620,450,847.79 : 2,236,224,439.07 = 877,894,910.54 : x - Step 2: Convert to fraction form
1,620,450,847.79/2,236,224,439.07 = 877,894,910.54/x - Step 3: Cross multiply
1,620,450,847.79x = 2,236,224,439.07 × 877,894,910.54 - Step 4: Simplify right side
1,620,450,847.79x = 1,963,170,053,873,538,304 - Step 5: Solve for x
x = 1,963,170,053,873,538,304/1,620,450,847.79 - Step 6: Final answer
x = 1,211,496,205.86
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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.