Finding the Fourth Proportional to 765,239,266.56, 1,148,051,157.12 and 219,981,792
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Solution
The fourth proportional to 765,239,266.56, 1,148,051,157.12 and 219,981,792 is: 330,027,955.81
Step by Step Solution
- Step 1: Write the proportion equation
765,239,266.56 : 1,148,051,157.12 = 219,981,792 : x - Step 2: Convert to fraction form
765,239,266.56/1,148,051,157.12 = 219,981,792/x - Step 3: Cross multiply
765,239,266.56x = 1,148,051,157.12 × 219,981,792 - Step 4: Simplify right side
765,239,266.56x = 252,550,350,850,931,136 - Step 5: Solve for x
x = 252,550,350,850,931,136/765,239,266.56 - Step 6: Final answer
x = 330,027,955.81
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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.