Finding the Fourth Proportional to 1,282,649,361.22, 1,770,129,056.51 and 718,129,304.02
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Solution
The fourth proportional to 1,282,649,361.22, 1,770,129,056.51 and 718,129,304.02 is: 991,059,276.07
Step by Step Solution
- Step 1: Write the proportion equation
1,282,649,361.22 : 1,770,129,056.51 = 718,129,304.02 : x - Step 2: Convert to fraction form
1,282,649,361.22/1,770,129,056.51 = 718,129,304.02/x - Step 3: Cross multiply
1,282,649,361.22x = 1,770,129,056.51 × 718,129,304.02 - Step 4: Simplify right side
1,282,649,361.22x = 1,271,181,547,377,105,408 - Step 5: Solve for x
x = 1,271,181,547,377,105,408/1,282,649,361.22 - Step 6: Final answer
x = 991,059,276.07
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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.