Finding the Fourth Proportional to 1,115,152,154.87, 1,672,918,800.64 and 459,744,902.15
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Solution
The fourth proportional to 1,115,152,154.87, 1,672,918,800.64 and 459,744,902.15 is: 689,695,919.02
Step by Step Solution
- Step 1: Write the proportion equation
1,115,152,154.87 : 1,672,918,800.64 = 459,744,902.15 : x - Step 2: Convert to fraction form
1,115,152,154.87/1,672,918,800.64 = 459,744,902.15/x - Step 3: Cross multiply
1,115,152,154.87x = 1,672,918,800.64 × 459,744,902.15 - Step 4: Simplify right side
1,115,152,154.87x = 769,115,890,295,618,176 - Step 5: Solve for x
x = 769,115,890,295,618,176/1,115,152,154.87 - Step 6: Final answer
x = 689,695,919.02
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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.