Finding the Fourth Proportional to 1,121,010,786.99, 1,547,041,884.18 and 644,701,527.96
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Solution
The fourth proportional to 1,121,010,786.99, 1,547,041,884.18 and 644,701,527.96 is: 889,715,137.56
Step by Step Solution
- Step 1: Write the proportion equation
1,121,010,786.99 : 1,547,041,884.18 = 644,701,527.96 : x - Step 2: Convert to fraction form
1,121,010,786.99/1,547,041,884.18 = 644,701,527.96/x - Step 3: Cross multiply
1,121,010,786.99x = 1,547,041,884.18 × 644,701,527.96 - Step 4: Simplify right side
1,121,010,786.99x = 997,380,266,548,963,456 - Step 5: Solve for x
x = 997,380,266,548,963,456/1,121,010,786.99 - Step 6: Final answer
x = 889,715,137.56
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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.