Finding the Fourth Proportional to 2,690,971,981.70, 4,036,457,972.55 and 1,965,377,869.70
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Solution
The fourth proportional to 2,690,971,981.70, 4,036,457,972.55 and 1,965,377,869.70 is: 2,948,066,804.55
Step by Step Solution
- Step 1: Write the proportion equation
2,690,971,981.70 : 4,036,457,972.55 = 1,965,377,869.70 : x - Step 2: Convert to fraction form
2,690,971,981.70/4,036,457,972.55 = 1,965,377,869.70/x - Step 3: Cross multiply
2,690,971,981.70x = 4,036,457,972.55 × 1,965,377,869.70 - Step 4: Simplify right side
2,690,971,981.70x = 7,933,165,171,223,900,160 - Step 5: Solve for x
x = 7,933,165,171,223,900,160/2,690,971,981.70 - Step 6: Final answer
x = 2,948,066,804.55
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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.