Finding the Fourth Proportional to 2,139,397,818.40, 2,951,926,880.99 and 1,235,138,083.37
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Solution
The fourth proportional to 2,139,397,818.40, 2,951,926,880.99 and 1,235,138,083.37 is: 1,704,235,312.70
Step by Step Solution
- Step 1: Write the proportion equation
2,139,397,818.40 : 2,951,926,880.99 = 1,235,138,083.37 : x - Step 2: Convert to fraction form
2,139,397,818.40/2,951,926,880.99 = 1,235,138,083.37/x - Step 3: Cross multiply
2,139,397,818.40x = 2,951,926,880.99 × 1,235,138,083.37 - Step 4: Simplify right side
2,139,397,818.40x = 3,646,037,310,022,575,616 - Step 5: Solve for x
x = 3,646,037,310,022,575,616/2,139,397,818.40 - Step 6: Final answer
x = 1,704,235,312.70
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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.