Finding the Fourth Proportional to 3,918,065,420.07, 5,879,626,571.43 and 1,430,718,091.70
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Solution
The fourth proportional to 3,918,065,420.07, 5,879,626,571.43 and 1,430,718,091.70 is: 2,147,000,421.45
Step by Step Solution
- Step 1: Write the proportion equation
3,918,065,420.07 : 5,879,626,571.43 = 1,430,718,091.70 : x - Step 2: Convert to fraction form
3,918,065,420.07/5,879,626,571.43 = 1,430,718,091.70/x - Step 3: Cross multiply
3,918,065,420.07x = 5,879,626,571.43 × 1,430,718,091.70 - Step 4: Simplify right side
3,918,065,420.07x = 8,412,088,108,155,545,600 - Step 5: Solve for x
x = 8,412,088,108,155,545,600/3,918,065,420.07 - Step 6: Final answer
x = 2,147,000,421.45
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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.