Finding the Fourth Proportional to 1,278,649,701.84, 1,764,536,594.76 and 691,938,843.60
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Solution
The fourth proportional to 1,278,649,701.84, 1,764,536,594.76 and 691,938,843.60 is: 954,875,607.53
Step by Step Solution
- Step 1: Write the proportion equation
1,278,649,701.84 : 1,764,536,594.76 = 691,938,843.60 : x - Step 2: Convert to fraction form
1,278,649,701.84/1,764,536,594.76 = 691,938,843.60/x - Step 3: Cross multiply
1,278,649,701.84x = 1,764,536,594.76 × 691,938,843.60 - Step 4: Simplify right side
1,278,649,701.84x = 1,220,951,410,868,116,224 - Step 5: Solve for x
x = 1,220,951,410,868,116,224/1,278,649,701.84 - Step 6: Final answer
x = 954,875,607.53
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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.