Finding the Fourth Proportional to 2,609,538,445.99, 3,914,675,297.43 and 838,315,220.05
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Solution
The fourth proportional to 2,609,538,445.99, 3,914,675,297.43 and 838,315,220.05 is: 1,257,590,930.85
Step by Step Solution
- Step 1: Write the proportion equation
2,609,538,445.99 : 3,914,675,297.43 = 838,315,220.05 : x - Step 2: Convert to fraction form
2,609,538,445.99/3,914,675,297.43 = 838,315,220.05/x - Step 3: Cross multiply
2,609,538,445.99x = 3,914,675,297.43 × 838,315,220.05 - Step 4: Simplify right side
2,609,538,445.99x = 3,281,731,883,389,329,408 - Step 5: Solve for x
x = 3,281,731,883,389,329,408/2,609,538,445.99 - Step 6: Final answer
x = 1,257,590,930.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.