Finding the Fourth Proportional to 442,886,742.90, 664,330,114.35 and 420,715,811.70
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Solution
The fourth proportional to 442,886,742.90, 664,330,114.35 and 420,715,811.70 is: 631,073,717.55
Step by Step Solution
- Step 1: Write the proportion equation
442,886,742.90 : 664,330,114.35 = 420,715,811.70 : x - Step 2: Convert to fraction form
442,886,742.90/664,330,114.35 = 420,715,811.70/x - Step 3: Cross multiply
442,886,742.90x = 664,330,114.35 × 420,715,811.70 - Step 4: Simplify right side
442,886,742.90x = 279,494,183,295,514,080 - Step 5: Solve for x
x = 279,494,183,295,514,080/442,886,742.90 - Step 6: Final answer
x = 631,073,717.55
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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.