Finding the Fourth Proportional to 689,397,734.38, 1,028,024,972.88 and 683,179,874.68
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Solution
The fourth proportional to 689,397,734.38, 1,028,024,972.88 and 683,179,874.68 is: 1,018,752,944.95
Step by Step Solution
- Step 1: Write the proportion equation
689,397,734.38 : 1,028,024,972.88 = 683,179,874.68 : x - Step 2: Convert to fraction form
689,397,734.38/1,028,024,972.88 = 683,179,874.68/x - Step 3: Cross multiply
689,397,734.38x = 1,028,024,972.88 × 683,179,874.68 - Step 4: Simplify right side
689,397,734.38x = 702,325,972,140,068,736 - Step 5: Solve for x
x = 702,325,972,140,068,736/689,397,734.38 - Step 6: Final answer
x = 1,018,752,944.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.