Finding the Fourth Proportional to 7,905,082,851.38, 11,857,187,813.63 and 5,780,106,135.50
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Solution
The fourth proportional to 7,905,082,851.38, 11,857,187,813.63 and 5,780,106,135.50 is: 8,669,840,066.17
Step by Step Solution
- Step 1: Write the proportion equation
7,905,082,851.38 : 11,857,187,813.63 = 5,780,106,135.50 : x - Step 2: Convert to fraction form
7,905,082,851.38/11,857,187,813.63 = 5,780,106,135.50/x - Step 3: Cross multiply
7,905,082,851.38x = 11,857,187,813.63 × 5,780,106,135.50 - Step 4: Simplify right side
7,905,082,851.38x = 68,535,804,031,267,749,888 - Step 5: Solve for x
x = 68,535,804,031,267,749,888/7,905,082,851.38 - Step 6: Final answer
x = 8,669,840,066.17
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1.5x scale
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.