Finding the Fourth Proportional to 1,328,608,891.80, 1,992,913,337.70 and 984,235,123.80
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Solution
The fourth proportional to 1,328,608,891.80, 1,992,913,337.70 and 984,235,123.80 is: 1,476,352,685.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,608,891.80 : 1,992,913,337.70 = 984,235,123.80 : x - Step 2: Convert to fraction form
1,328,608,891.80/1,992,913,337.70 = 984,235,123.80/x - Step 3: Cross multiply
1,328,608,891.80x = 1,992,913,337.70 × 984,235,123.80 - Step 4: Simplify right side
1,328,608,891.80x = 1,961,495,305,653,830,656 - Step 5: Solve for x
x = 1,961,495,305,653,830,656/1,328,608,891.80 - Step 6: Final answer
x = 1,476,352,685.70
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1.5x scale
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.