Finding the Fourth Proportional to 1,206,479,875.55, 1,809,717,139.51 and 321,165,435.65
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Solution
The fourth proportional to 1,206,479,875.55, 1,809,717,139.51 and 321,165,435.65 is: 481,747,441.70
Step by Step Solution
- Step 1: Write the proportion equation
1,206,479,875.55 : 1,809,717,139.51 = 321,165,435.65 : x - Step 2: Convert to fraction form
1,206,479,875.55/1,809,717,139.51 = 321,165,435.65/x - Step 3: Cross multiply
1,206,479,875.55x = 1,809,717,139.51 × 321,165,435.65 - Step 4: Simplify right side
1,206,479,875.55x = 581,218,593,504,149,376 - Step 5: Solve for x
x = 581,218,593,504,149,376/1,206,479,875.55 - Step 6: Final answer
x = 481,747,441.70
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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.