Finding the Fourth Proportional to 2,987,448,220.80, 4,481,172,331.20 and 2,115,034,675.20
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Solution
The fourth proportional to 2,987,448,220.80, 4,481,172,331.20 and 2,115,034,675.20 is: 3,172,552,012.80
Step by Step Solution
- Step 1: Write the proportion equation
2,987,448,220.80 : 4,481,172,331.20 = 2,115,034,675.20 : x - Step 2: Convert to fraction form
2,987,448,220.80/4,481,172,331.20 = 2,115,034,675.20/x - Step 3: Cross multiply
2,987,448,220.80x = 4,481,172,331.20 × 2,115,034,675.20 - Step 4: Simplify right side
2,987,448,220.80x = 9,477,834,866,034,819,072 - Step 5: Solve for x
x = 9,477,834,866,034,819,072/2,987,448,220.80 - Step 6: Final answer
x = 3,172,552,012.80
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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.