Finding the Fourth Proportional to 1,167,351,379.20, 1,610,932,959.36 and 645,834,343.68
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Solution
The fourth proportional to 1,167,351,379.20, 1,610,932,959.36 and 645,834,343.68 is: 891,244,786.32
Step by Step Solution
- Step 1: Write the proportion equation
1,167,351,379.20 : 1,610,932,959.36 = 645,834,343.68 : x - Step 2: Convert to fraction form
1,167,351,379.20/1,610,932,959.36 = 645,834,343.68/x - Step 3: Cross multiply
1,167,351,379.20x = 1,610,932,959.36 × 645,834,343.68 - Step 4: Simplify right side
1,167,351,379.20x = 1,040,395,830,520,745,600 - Step 5: Solve for x
x = 1,040,395,830,520,745,600/1,167,351,379.20 - Step 6: Final answer
x = 891,244,786.32
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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.