Finding the Fourth Proportional to 418,917,220.84, 628,474,741.98 and 131,702,884.84
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Solution
The fourth proportional to 418,917,220.84, 628,474,741.98 and 131,702,884.84 is: 197,585,423.68
Step by Step Solution
- Step 1: Write the proportion equation
418,917,220.84 : 628,474,741.98 = 131,702,884.84 : x - Step 2: Convert to fraction form
418,917,220.84/628,474,741.98 = 131,702,884.84/x - Step 3: Cross multiply
418,917,220.84x = 628,474,741.98 × 131,702,884.84 - Step 4: Simplify right side
418,917,220.84x = 82,771,936,567,840,656 - Step 5: Solve for x
x = 82,771,936,567,840,656/418,917,220.84 - Step 6: Final answer
x = 197,585,423.68
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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.