Finding the Fourth Proportional to 3,868,318,459.29, 5,338,297,551.68 and 2,197,659,274.05
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Solution
The fourth proportional to 3,868,318,459.29, 5,338,297,551.68 and 2,197,659,274.05 is: 3,032,780,068.54
Step by Step Solution
- Step 1: Write the proportion equation
3,868,318,459.29 : 5,338,297,551.68 = 2,197,659,274.05 : x - Step 2: Convert to fraction form
3,868,318,459.29/5,338,297,551.68 = 2,197,659,274.05/x - Step 3: Cross multiply
3,868,318,459.29x = 5,338,297,551.68 × 2,197,659,274.05 - Step 4: Simplify right side
3,868,318,459.29x = 11,731,759,122,087,962,624 - Step 5: Solve for x
x = 11,731,759,122,087,962,624/3,868,318,459.29 - Step 6: Final answer
x = 3,032,780,068.54
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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.