Finding the Fourth Proportional to 393,405,912.20, 590,108,868.30 and 278,520,177.80
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Solution
The fourth proportional to 393,405,912.20, 590,108,868.30 and 278,520,177.80 is: 417,780,266.70
Step by Step Solution
- Step 1: Write the proportion equation
393,405,912.20 : 590,108,868.30 = 278,520,177.80 : x - Step 2: Convert to fraction form
393,405,912.20/590,108,868.30 = 278,520,177.80/x - Step 3: Cross multiply
393,405,912.20x = 590,108,868.30 × 278,520,177.80 - Step 4: Simplify right side
393,405,912.20x = 164,357,226,920,272,768 - Step 5: Solve for x
x = 164,357,226,920,272,768/393,405,912.20 - Step 6: Final answer
x = 417,780,266.70
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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.