Finding the Fourth Proportional to 1,643,865,447.92, 2,465,420,847.96 and 980,067,295.40
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Solution
The fourth proportional to 1,643,865,447.92, 2,465,420,847.96 and 980,067,295.40 is: 1,469,875,983.79
Step by Step Solution
- Step 1: Write the proportion equation
1,643,865,447.92 : 2,465,420,847.96 = 980,067,295.40 : x - Step 2: Convert to fraction form
1,643,865,447.92/2,465,420,847.96 = 980,067,295.40/x - Step 3: Cross multiply
1,643,865,447.92x = 2,465,420,847.96 × 980,067,295.40 - Step 4: Simplify right side
1,643,865,447.92x = 2,416,278,342,482,931,712 - Step 5: Solve for x
x = 2,416,278,342,482,931,712/1,643,865,447.92 - Step 6: Final answer
x = 1,469,875,983.79
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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.