Finding the Fourth Proportional to 1,337,479,214.40, 2,006,218,821.60 and 813,690,964.80
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Solution
The fourth proportional to 1,337,479,214.40, 2,006,218,821.60 and 813,690,964.80 is: 1,220,536,447.20
Step by Step Solution
- Step 1: Write the proportion equation
1,337,479,214.40 : 2,006,218,821.60 = 813,690,964.80 : x - Step 2: Convert to fraction form
1,337,479,214.40/2,006,218,821.60 = 813,690,964.80/x - Step 3: Cross multiply
1,337,479,214.40x = 2,006,218,821.60 × 813,690,964.80 - Step 4: Simplify right side
1,337,479,214.40x = 1,632,442,128,547,622,912 - Step 5: Solve for x
x = 1,632,442,128,547,622,912/1,337,479,214.40 - Step 6: Final answer
x = 1,220,536,447.20
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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.