Finding the Fourth Proportional to 458,496,811.60, 687,745,217.40 and 313,377,989.20
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Solution
The fourth proportional to 458,496,811.60, 687,745,217.40 and 313,377,989.20 is: 470,066,983.80
Step by Step Solution
- Step 1: Write the proportion equation
458,496,811.60 : 687,745,217.40 = 313,377,989.20 : x - Step 2: Convert to fraction form
458,496,811.60/687,745,217.40 = 313,377,989.20/x - Step 3: Cross multiply
458,496,811.60x = 687,745,217.40 × 313,377,989.20 - Step 4: Simplify right side
458,496,811.60x = 215,524,213,310,728,832 - Step 5: Solve for x
x = 215,524,213,310,728,832/458,496,811.60 - Step 6: Final answer
x = 470,066,983.80
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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.