Finding the Fourth Proportional to 1,916,497,630.80, 2,874,746,446.20 and 689,223,214.80
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Solution
The fourth proportional to 1,916,497,630.80, 2,874,746,446.20 and 689,223,214.80 is: 1,033,834,822.20
Step by Step Solution
- Step 1: Write the proportion equation
1,916,497,630.80 : 2,874,746,446.20 = 689,223,214.80 : x - Step 2: Convert to fraction form
1,916,497,630.80/2,874,746,446.20 = 689,223,214.80/x - Step 3: Cross multiply
1,916,497,630.80x = 2,874,746,446.20 × 689,223,214.80 - Step 4: Simplify right side
1,916,497,630.80x = 1,981,341,987,384,838,912 - Step 5: Solve for x
x = 1,981,341,987,384,838,912/1,916,497,630.80 - Step 6: Final answer
x = 1,033,834,822.20
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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.