Finding the Fourth Proportional to 1,206,804,596.85, 1,810,206,895.28 and 431,325,889.65
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Solution
The fourth proportional to 1,206,804,596.85, 1,810,206,895.28 and 431,325,889.65 is: 646,988,834.48
Step by Step Solution
- Step 1: Write the proportion equation
1,206,804,596.85 : 1,810,206,895.28 = 431,325,889.65 : x - Step 2: Convert to fraction form
1,206,804,596.85/1,810,206,895.28 = 431,325,889.65/x - Step 3: Cross multiply
1,206,804,596.85x = 1,810,206,895.28 × 431,325,889.65 - Step 4: Simplify right side
1,206,804,596.85x = 780,789,099,557,210,368 - Step 5: Solve for x
x = 780,789,099,557,210,368/1,206,804,596.85 - Step 6: Final answer
x = 646,988,834.48
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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.