Finding the Fourth Proportional to 485,121,470.42, 669,535,905.57 and 308,853,158.42
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Solution
The fourth proportional to 485,121,470.42, 669,535,905.57 and 308,853,158.42 is: 426,260,826.86
Step by Step Solution
- Step 1: Write the proportion equation
485,121,470.42 : 669,535,905.57 = 308,853,158.42 : x - Step 2: Convert to fraction form
485,121,470.42/669,535,905.57 = 308,853,158.42/x - Step 3: Cross multiply
485,121,470.42x = 669,535,905.57 × 308,853,158.42 - Step 4: Simplify right side
485,121,470.42x = 206,788,279,110,889,408 - Step 5: Solve for x
x = 206,788,279,110,889,408/485,121,470.42 - Step 6: Final answer
x = 426,260,826.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.