Finding the Fourth Proportional to 398,977,051.20, 597,457,807.20 and 261,920,385.60
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Solution
The fourth proportional to 398,977,051.20, 597,457,807.20 and 261,920,385.60 is: 392,218,997.99
Step by Step Solution
- Step 1: Write the proportion equation
398,977,051.20 : 597,457,807.20 = 261,920,385.60 : x - Step 2: Convert to fraction form
398,977,051.20/597,457,807.20 = 261,920,385.60/x - Step 3: Cross multiply
398,977,051.20x = 597,457,807.20 × 261,920,385.60 - Step 4: Simplify right side
398,977,051.20x = 156,486,379,241,554,464 - Step 5: Solve for x
x = 156,486,379,241,554,464/398,977,051.20 - Step 6: Final answer
x = 392,218,997.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.