Finding the Fourth Proportional to 1,135,296,579.90, 1,702,944,869.85 and 769,812,138.30
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Solution
The fourth proportional to 1,135,296,579.90, 1,702,944,869.85 and 769,812,138.30 is: 1,154,718,207.45
Step by Step Solution
- Step 1: Write the proportion equation
1,135,296,579.90 : 1,702,944,869.85 = 769,812,138.30 : x - Step 2: Convert to fraction form
1,135,296,579.90/1,702,944,869.85 = 769,812,138.30/x - Step 3: Cross multiply
1,135,296,579.90x = 1,702,944,869.85 × 769,812,138.30 - Step 4: Simplify right side
1,135,296,579.90x = 1,310,947,631,666,243,584 - Step 5: Solve for x
x = 1,310,947,631,666,243,584/1,135,296,579.90 - Step 6: Final answer
x = 1,154,718,207.45
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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.