Finding the Fourth Proportional to 1,247,512,737.60, 1,869,253,567.20 and 786,626,107.20
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Solution
The fourth proportional to 1,247,512,737.60, 1,869,253,567.20 and 786,626,107.20 is: 1,178,668,251.33
Step by Step Solution
- Step 1: Write the proportion equation
1,247,512,737.60 : 1,869,253,567.20 = 786,626,107.20 : x - Step 2: Convert to fraction form
1,247,512,737.60/1,869,253,567.20 = 786,626,107.20/x - Step 3: Cross multiply
1,247,512,737.60x = 1,869,253,567.20 × 786,626,107.20 - Step 4: Simplify right side
1,247,512,737.60x = 1,470,403,656,936,249,856 - Step 5: Solve for x
x = 1,470,403,656,936,249,856/1,247,512,737.60 - Step 6: Final answer
x = 1,178,668,251.33
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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.